Intermediaries buffer incumbents from new entrants. Incumbents sustain intermediaries by providing anchor clients and legitimacy. New entrants face a double filter: prove relevance to the intermediary, then prove fit to the incumbent. Present in 96 of 221 diagnosed ecosystems across 37 countries. The gate has two locks.
This stack is the gatekeeping configuration. It does not exclude new entrants — it routes them through a pathway that is simultaneously the only way in and the reason they cannot get through. The intermediary needs the incumbent to justify its existence. The incumbent needs the intermediary to manage the volume of new entrant requests without changing its procurement processes. Together, they create a structural barrier that has nothing to do with the new entrant's actual capability.
Intermediation (S5) and incumbent stabilisation (S6) reinforce each other through a mechanism that appears — to every actor individually — as a service. The intermediary provides access. The incumbent provides the anchor relationship that makes access valuable. The new entrant works through the intermediary to reach the incumbent. Every connection routes through a broker. Every broker's existence depends on the incumbent remaining central.
The structural logic is precise: incumbent organisations — large corporates, anchor universities, defence contractors, hospital networks — have complex procurement processes that create a genuine coordination cost. Intermediary organisations — accelerators, cluster bodies, innovation hubs, technology transfer offices — absorb that cost by managing the relationship between new entrants and incumbents. The intermediary reduces friction for the incumbent (fewer unsolicited approaches, pre-filtered deal flow). The incumbent provides the intermediary with legitimacy and anchor status (the reason new entrants use the intermediary in the first place).
Neither actor is behaving irrationally. Both are optimising for their own survival. The structural consequence is that new entrants face a double filter: first, demonstrate relevance to the intermediary's selection criteria (which may or may not reflect actual market opportunity); second, demonstrate fit to the incumbent's procurement requirements (which reflect the incumbent's interests, not the ecosystem's). The most capable new entrant can be filtered out at either stage for reasons unrelated to their capability.
96 of 221 ecosystems — 43% of the dataset. 37 countries. Corporate-anchored ecosystems dominate (48 of 96) — exactly what the mechanism predicts. Corporate procurement complexity creates the intermediation demand. University-anchored ecosystems also show the pattern (28) but through a different mechanism: research collaboration frameworks route new entrants through technology transfer offices that gate access to principal investigators.
The regime distribution is informative: growing ecosystems (55) show this stack far more than mature ones (16). Growing ecosystems have intermediary layers that are still consolidating — the gatekeeping function is not yet recognised as structural because it appears as a service. Mature ecosystems have either resolved the pattern or normalised it beyond visibility.
Detroit Mobility & Auto Tech (95 evidence items, medium confidence). A dense intermediary layer co-occurs with incumbent geographic and organisational continuity. Intermediary organisations reduce pressure on incumbents — the major auto manufacturers and their Tier 1 suppliers — to directly couple with new entrants by providing buffered engagement channels. Incumbent stability sustains intermediary organisations by providing anchor clients and legitimacy. The system absorbs disruption from new technology domains (EV, autonomous, connected vehicles), uncertainty about market structure evolution, and the complexity of ecosystem fragmentation. The leverage hypothesis points to transparency: if partnership agreements disclosed decision authority and exit conditions, the buffering function would become visible as a cost rather than invisible as a service.
Boston Robotics & AI (87 evidence items, medium confidence). Mediating through intermediary infrastructure — MassRobotics, working groups — sustains stabilisation around incumbents by providing integration pathways that preserve incumbent centrality. New entrants access the ecosystem through these intermediaries, which pre-filter for incumbent relevance. The system absorbs uncertainty about direct market entry pathways, pressure to access established networks, and the complexity of navigating incumbent relationships. A robotics startup that could directly serve a corporate need instead routes through MassRobotics — adding a step that the intermediary presents as value and the startup experiences as a tax.
West Midlands Innovation Ecosystem (86 evidence items, medium confidence). Government-anchored, growing. Incumbent institutional centrality creates conditions where intermediary infrastructure appears necessary for access. Intermediary activity credits institutional anchors — reports cite anchor participation, events feature anchor speakers, success stories reference anchor endorsement. The leverage hypothesis is specific: if the ratio of direct partnerships to intermediated connections were made observable across all institutions, the gatekeeping function would become measurable.
What makes this stack distinctive is not that it blocks new entrants — it is that it appears to help them. The intermediary offers mentorship, introductions, programme participation, showcasing opportunities. The incumbent offers procurement pathways, partnership frameworks, endorsement possibilities. Each filter is presented as an opportunity. Each filter selects for relevance to the existing structure rather than capability to create new value.
Filter 1 — the intermediary: Does this new entrant fit our programme criteria? Are they at the right stage? Do they serve the sectors our anchor partners care about? Are they "ecosystem-ready"? These questions sound reasonable. They are. But they systematically favour entrants who align with incumbent interests over entrants who might disrupt them.
Filter 2 — the incumbent: Does this new entrant fit our procurement process? Can they meet our compliance requirements? Do they have the scale to serve us? Have they been endorsed by an intermediary we trust? These questions also sound reasonable. They are also structural: they select for actors who fit the existing system rather than actors who might change it.
A founder with a genuinely disruptive capability — one that an incumbent's procurement team has never specified because they didn't know it existed — fails both filters. Not because the capability isn't valuable. Because the filters are designed to process known categories.
The leverage converges on bypassing the intermediary layer for one specific transaction:
1. One direct procurement pathway. One RFI that reaches the founder population without intermediary filtering. One procurement decision made on capability fit rather than relationship proximity. The demonstration that direct coupling is possible — even once — changes the information environment for every subsequent actor. The incumbents learn that the intermediary layer is not the only source of qualified entrants. The founders learn that the intermediary pathway is not the only route.
2. Making intermediation performance visible. What is the conversion rate of intermediated introductions to commercial outcomes? What is the time from introduction to procurement decision? How does this compare to any direct connections that have formed? When these numbers become visible, the intermediary layer is evaluated as infrastructure — with a measurable cost and a measurable benefit — rather than accepted as a structural necessity.
3. Capability matching independent of relationship. If founders could be matched to procurement needs on the basis of technical capability, readiness level, and domain fit — without the intermediary assessing "ecosystem readiness" — the gatekeeping function would be exposed. Not eliminated. Exposed. The actors who benefit from the gate would have to justify it against an alternative that works without it.
"How many founders in your ecosystem have a direct relationship with your anchor's procurement team — one that didn't start with an intermediary introduction?"
If the answer is close to zero, the intermediation-incumbent stack is structural. The question is not whether the intermediary provides value. The question is whether the system can function without it — and whether anyone has tried.
This stack is easier to identify than most because the intermediary layer is visible — it has a name, a building, a programme. What is harder to establish is whether the intermediation is genuinely reducing transaction costs (in which case it is a service) or perpetuating incumbent dependency (in which case it is a stall). The test is not to ask the intermediary — they will describe value. The test is to ask the founders who didn't get through the filter what happened.
Is the gatekeeping configuration operating in your ecosystem? The interactive self-diagnostic identifies your stalls, detects reinforcing stacks, and generates leverage hypotheses — calibrated against 221 comparable ecosystems.
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