Why TSMC’s Pure‑Foundry Model Defies Industry Norms and Dominates the Chip Market

TSMC, listed in 1994, achieved a revenue compound annual growth rate of 18.5% through 2022, with an average gross margin of 50% and net margin of 36%; for every $6 of product sold, $3 are gross profit and $2 net profit, illustrating the rare success of a pure‑foundry business.

TSMC’s manufacturing‑only model is almost anomalous in history.

Despite common rumors about high work pressure, TSMC’s salaries, benefits and career development far exceed Taiwan’s average; its workforce represents only 0.4% of Taiwan’s labor force yet contributes 1.5% of newborns, reflecting the positive impact of its welfare system.

The company’s technical leadership is underpinned by a continuously growing patent portfolio, now exceeding 71,000 patents worldwide, including over 8,800 granted in 2021, ranking fourth in U.S. filings and staying in the top‑ten U.S. filers for six consecutive years; R&D spending in 2021 accounted for 7.9% of revenue, about US$4.5 billion.

In 2021 TSMC offered 291 distinct process technologies, producing 12,302 product types for 535 customers; it provides more than 38,000 technical documents and 2,600 design kits online, with over 100,000 annual downloads, and its component database grew by more than 35,000 IP items in 2020.

Apple remains TSMC’s largest customer; while Qualcomm and Nvidia are shifting volume to Samsung, MediaTek rose to the second‑largest customer in 2021, and AMD (referred to as “超威”) became the third, boosted by a surge in gaming‑related orders and may soon overtake MediaTek.

The overall chip market fluctuates, but the wafer‑foundry segment has almost only grown.

Since 2011, wafer‑foundry revenue share in the total semiconductor market has risen from 12% to 24% over 12 years, averaging a 1% annual increase; nevertheless, integrated device manufacturers (IDMs) still control more than half of the market, with companies such as Intel, Samsung, SK Hynix, Micron, Texas Instruments, Infineon, STMicroelectronics, NXP and Renesas.

In the 2021 Q2 global top‑15 semiconductor ranking, eight slots are held by IDMs, six by fabless firms, and TSMC is the sole pure‑foundry; Europe and Japan have weak foundry presence (only GlobalFoundries and UMC), but strong IDM sectors.

It is inaccurate to claim that one in two chips worldwide is made by TSMC; the correct statement is that one in two custom or contract chips is manufactured by TSMC.

TSMC’s rival UMC has long challenged it, earning respect from TSMC’s founder; competition from UMC helped drive TSMC’s rapid growth and the prominence of Taiwan’s foundry industry.

Building a TSMC‑scale fab requires massive capital: by the end of 2020 cumulative capex reached NT$4.3 trillion (≈CNY 1 trillion), 37% of revenue, and an additional CNY 1 trillion is planned for 2021‑2024.

China is now the world’s largest chip‑import market; in 2021 it imported 6.355 × 10¹¹ chips worth US$439.7 billion, underscoring the strategic importance of domestic semiconductor manufacturing.

The book “Chip Wave” by Yu Sheng, the author of “Chip War”, is the first market‑focused work on wafer‑foundry history, offering detailed data and rigorous analysis of TSMC, UMC, SMIC, GlobalFoundries and the intense competition with integrated fabs, providing valuable insights for China’s chip‑manufacturing ambitions.