TSMC: the indispensable factory of the AI era
A neutral, fully-cited teardown of the world's dominant chip foundry — the company that physically builds the silicon behind Apple, Nvidia and the AI boom — and the three questions that decide what it becomes next.
TSMC does not design or sell chips of its own — it manufactures other companies' designs, and it does so at a scale and precision no rival can match. In FY2025 it earned US$122.4bn of revenue at a 59.9% gross margin, held an estimated ~66–70% of the foundry market and over 90% of the leading edge.[3]·[11]·[9] The question is no longer whether TSMC dominates — it is whether the AI cycle, the geopolitics of Taiwan, and the cost of going global all break its way at once.
Figures from TSMC's FY2025 results and industry trackers.[2]·[3]·[9] Revenue in US$.
TSMC annual revenue, US$ bn, 2020–2025. Note the 2023 downcycle before the AI-driven surge. Hover for YoY growth.
Sources: TSMC results; revenue history per market trackers.[12]·[3]
The three questions this study is organised around
This is a compilation, not an argument. On each question the evidence genuinely cuts both ways; we lay out the strongest version of each side and leave the weighing to you.
Is the leading-edge monopoly durable — or will Samsung, Intel and China close the gap?
For: TSMC holds >90% of the 3nm/2nm leading edge; reported N2 yield ~65% vs Intel 18A ~55% and Samsung SF2 ~40%, with 500+ customers. Against: Intel's 18A is improving and won Microsoft; SMIC pushes 7nm on DUV; the capital arms race never stops.[9]·[10]·[22]·[23]
Read the evidence →Is the AI super-cycle durable enough to justify $52–56bn a year — or an overbuild?
For: AI/HPC was 58% of 2025 revenue, Nvidia reportedly locked >60% of 2026 packaging, and hyperscaler capex keeps rising. Against: CEO C.C. Wei said TSMC is 'very nervous' and careless capex 'would be a disaster'; revenue leans on two customers and peak margins.[3]·[18]·[4]·[31]
Read the evidence →Can TSMC globalise without eroding its margins — or Taiwan's 'silicon shield'?
For: US/Japan/Germany fabs are customer- and subsidy-funded, and TSMC keeps R&D and the most advanced nodes in Taiwan ('Made with Taiwan'). Against: overseas fabs dilute gross margin 2–4pp, and advanced-process capacity in Taiwan is projected to fall from ~94% to ~79% by 2026.[27]·[29]·[28]·[15]
Read the evidence →