While Google has their own chips, they don't really have the market power there to buy up bleeding-edge manufacturing capacity.

Apple on the other hand... (though they're behind in other regards)

But they were just an example. They are many players arising. You can look at this: https://news.ycombinator.com/item?id=45746246 even <https://www.nextsilicon.com/> is not on that list.

I don't see a natural monopoly anymore.