Morris Chang's Pure-Play promise — that TSMC would never design its own chips — was, in retrospect, the precondition for everything else. It made the foundry the only counterparty in the world to whom EDA vendors, IP houses, and fabless customers could safely open their books. The Open Innovation Platform is what they built on top.
The customers Chang built the foundry for. They own the IP; TSMC owns the line. Apple alone is roughly a quarter of TSMC's revenue.
ASML, Applied Materials, Lam, KLA, Tokyo Electron. A single EUV scanner contains 100,000 parts and only one company assembles it.
Synopsys, Cadence, Siemens EDA, Ansys. Each new node ships with a TSMC-qualified Reference Flow stress-tested across every major tool combination.
ARM cores, memory compilers, SerDes blocks, analog tiles, all silicon-proven on TSMC nodes. The catalog grew from ~1,500 in 2008 to 50,000+ active titles.
The asymmetry the rest of the industry kept underestimating: a competitor could buy lithography scanners and hire process engineers. What it could not buy was a population of customers who had spent fifteen years debugging their netlists against TSMC's specific PDKs.
To move a complex chip from TSMC's 5nm to a competitor's nominally equivalent 5nm: $70-100M per chip in respin cost, twelve to eighteen months of schedule. For a leading-edge product whose entire commercial life is twenty-four months, the math does not pencil.
Samsung's parallel ecosystem — SAFE — reached 3,600 IP titles by 2023. Intel hired Suk Lee, the executive who ran the OIP for thirteen years, in 2022. Both faced the same problem. An ecosystem is not a person. It is the residue of fifteen years of relationships among hundreds of organizations that have learned to coordinate their bug-tracking systems, their roadmap reviews, and their shared customers.