> Apple is both willing to pay more and has the needed scale to buy up all capacity. If someone else wanted to both pay more and buy up all capacity - they have the ability to do so.

I think the issue is that the investment costs are so high that this ability is limited to a very small group of companies, as is the required knowledge.

I don't really know where I stand on this myself; in principle I agree with your point of view, but I also think it's a little bit too simplistic.