TSMC are going to be exposed to high risk re-building in the USA (making VLSI plants is very very expensive and yield can be many years in the hunting), and have bottlenecks (water access) in Taiwan as well as the war risk. Maybe Berkshire sees them as a dropping value shere for a bit. I doubt they won't return, maybe later on when TSMC shares are better value? Berkshire is a hold company, not a trade-at-a-rate-of-knots company.
I'm not sure why Berkshire thinks banks are a bad bet: they have made bank (sorry) this last downturn, and will continue to. A lot of profit in them yet, and with interest rates going high, people will be flocking to them for income generating products like annuities. Maybe I misunderstand the risk here but I would think a bank is a better bet right now than listed property trusts.
If I am not mistaken, Berkshire is huge in re-insurance and in general goods and services. If they move out of the insurance market and cite global warming risk, thats the signal everyone needs to see that its a real risk, not some fancy.
Is Berkshire invested in the dutch chip-making tool maker side of things? Thats got to be the shovel-seller in the goldrush.
[edit: I am hazy on exactly what is the role between Apple, ARM-UK holdings, Wolfson, TSMC and their history of chip design so please don't beat me up if you know ARM was never the foundry. The point was, Apple used UK VLSI designs, secured designs, and then moved into the territory to internalise profit. exactly what they did I don't know but I do know they marginalised work that was done for them]