It is in fact insane for anyone to have claimed that Apple would fail for a long time now, because they have huge stacks of cash and huge investments. Apple has more actual cash than almost anyone, they can literally pay their bills for a long time without having to do anything other than authorize payments.
Apple also has big stupid inertia like Microsoft used to have, where people just assumed competence. And they have more technical competence than Microsoft ever did, at least in their domain, and a demonstrated ability to capitalize. Now that they have their own competitive CPU (again, in their domain) they are actually a force again like they used to be.
If they ever get their CPUs to scale up to the really high end, they could genuinely dominate. That's irritating given how much they lock everything down, though.