Apple doesn't really exist as a competitor for a number of industries and use cases due to not officially supporting anything other than OSX so I'm not sure if they're a fair comparison here.

The only real edge they have is in non-gaming related consumer workloads.

I'd buy a macbook, but it's a lot more expensive than my "throw Linux on a used corporate thinkpad" approach, and I can tolerate macOS, but don't love it. If you're in the market for a new premium laptop, I think they're pretty established, and I do think people are buying them.

Ampere workstations are cool, but in a price range where most customers are probably corporate, and they'll mostly buy what they know works. I think their offerings are mostly niche for engineers who do dev work with stuff that will run on arm servers.

I'd say non-corporate arm adoption will grow when there's more affordable new and used options from mainstream manufacturers. Most people won't go for an expensive niche option, and probably don't care about architecture. Most Apple machines probably sell because they're Apple machines, not because of the chip inside.

I don't know exact numbers, but I do feel that arm server adoption isn't going to badly, especially with new web servers.