I would argue that margins on the leading node are tough even with price hike. You build a new building outfit it with new tools ( expensive ). The technology has more steps as well so cost goes up a lot too. Then you got depreciation plus tie consumables. As noted by another post, it’s the legacy nodes like N7 that are / should be really making money as the tools depreciated and the efficiency and cost reductions of 5-7 years high volume learning are applied and you of course give some of that to your customers as wafer discount from five years ago. You lure customers from older nodes with PPAC competitiveness to peers and you have TSMCs great business model.True and TSMC has no competition at N3 so the margins will be higher than previous nodes. I have never heard big TSMC customers openly support TSMC price hikes before. Exciting times.
The challenge is China adding a lot of legacy, and Samsung and Intel hoping to take some leading and legacy. Also Intel which total volume is huge hoping to bring it all in house and add some additional customer makes for some competition if they can fix their culture and execute.
Even with all that, by any metric TSM is still cheap at current valuations. Home run you chase AI, want steady singles TSM