Independent, named Tier-2 analysts characterize the ASML/Zeiss EUV advantage as resting on tacit, cross-organizational know-how rather than patents as the primary protective mechanism

Samo Burja's Bismarck Analysis writes that reliably reproducing ASML/Zeiss's photolithography capability "relies on intellectual dark matter: the tacit knowledge, idiosyncratic skill, and unwritten rules that are necessary for success but cannot be made legible to outsiders or non-experts except through training with the current expert practitioners, in whose heads the knowledge actually lives," and frames ASML/Zeiss as the container for a multi-generational "tradition of knowledge" traceable back through Philips's NatLab labs to the 1970s. A separate piece hosted by CEIPI's IP Business Academy makes a structurally similar argument via the Resource-Based View of the firm: EUV capability "sits in the interaction between ASML as system integrator, Carl Zeiss SMT as the provider of the optical system, TRUMPF..., Fraunhofer institutes and many other specialized suppliers," forming "a resource system" — "routines, trust, supplier qualification, engineering memory, process knowledge, tacit expertise, investment discipline and the ability to coordinate many forms of knowledge across organizational boundaries" — rather than a patent-protected artifact, explicitly arguing patents are one contributing mechanism among several, not the source of the advantage itself.

This clears the mechanism-claim floor at Tier 2: the "tacit-knowledge-not- patents" framing is a real, independently-argued analytical position, not an artifact invented by the Tier-4 explainer site that originally sourced claim-euv-mirror-advantage-is-tacit-know-how-not-patent. It is best read as a claim about ASML/Zeiss's durability against future or hypothetical competitors — Burja's piece is explicitly framed around whether China could catch up — rather than a specific historical account of why Nikon and Canon in particular did not succeed; that narrower, contested causal claim is addressed separately in claim-nikon-canon-euv-exclusion-was-consortium-politics-not-failed-imitation. It supplies the industry-analyst leg alongside the strategy-literature mechanism already in the vault (claim-causal-ambiguity-from-tacitness-raises-imitation-barriers) and the automation-side parallel in claim-polanyis-paradox-tacit-tasks-resist-automation — see observation-codification-is-the-shared-hinge-of-automation-and-imitation for the full bridge.