Well yeah but you need someone that has some understanding of what he is actually selling to come to that realization, not the greedy bitch that is Tim Cook.
I think the mistake already happened, you can see fewer and fewer macOS only software and there is very little in the way of novelty/exclusivity (both iOS/macOS). Devs are now more and platform stuff more and more (mostly web technologies because it makes for good UI even though performance is not the best, it doesn't matter with today's powerful machines.
I'll add that one key point that Apple was better on is becoming very moot: software optimisation (performance and UI) matters a lot less in today's cheap powerful computing. Apple is supposedly selling top of the line hardware but skimping every way possible so in the end, when price matched, competitive hardware does not do worse no matter how bad the softwares are optimized on concurrent platform.
I think the mistake already happened, you can see fewer and fewer macOS only software and there is very little in the way of novelty/exclusivity (both iOS/macOS). Devs are now more and platform stuff more and more (mostly web technologies because it makes for good UI even though performance is not the best, it doesn't matter with today's powerful machines.
I'll add that one key point that Apple was better on is becoming very moot: software optimisation (performance and UI) matters a lot less in today's cheap powerful computing. Apple is supposedly selling top of the line hardware but skimping every way possible so in the end, when price matched, competitive hardware does not do worse no matter how bad the softwares are optimized on concurrent platform.