That buying however much of whatever from a single company can be read as "anti-competitive" reflects more on the market, which relies on a single company for its fundamentals, than the buyer.

To me it seems that the problem is not that Apple bought however much of whatever from TSMC, but rather that TSMC doesn't have competition at the moment. Hopefully that changes.

(I do think HN is a bit trigger-happy with downvotes lately. I don't often get downvoted, but sometimes people who reply to me with a different view do, and so they get grayed out and drop in the comments. I used to try to counter that, but my one vote doesn't work for very long, so I mostly gave up. But it's really annoying.)