Earlier quoted context omitted.
And how much has it cost Microsoft? Apple was able to successfully take the base of MacOS and port it’s operating system to a much lower spec phone back in 2007 and came to dominate the smart phone market (in profit they only thing that matters), the tablet market where MS failed repeatedly, not to mention it was able to port the base OS to everything from Watches and TV set top boxes - all things that Microsoft trie…
Unless you have shares in Apple your whole point is invalid, you're looking to this from Apple point of view which is very good for her business but not mine, i care about the company that give me the best solutions to my problems not the company that's can milk me the last day of my life.
What the grandparent said doesn't exclude Apple as a company giving "the best solutions to [a user's] problems". If anything, it can be an enabler.
You say "i care about the company that give me the best solutions to my problems".
Well, hundreds of millions had the same concern on mobile, and they settled on Apple (and others on Android), not Microsoft.
And that was because Apple could (partly thanks to its lax approach on backwards compatibility), be able to shrink down OS X as needed for mobile (and now wearables), make the transition to x86 and later ARM for mobile (and in the future ARM for desktop perhaps), and so on.
In general, they can move forward faster, break things if needed, etc.
Then there are other concerns. I don't want my OS to be burdened with ancient code (and vulnerabilities etc). I don't want developers to stick to ancient versions and not integrate new features etc (Apples forces their hand to -- those that can't be bothered are eliminated). And I don't want a mix of new, old, medium-old UIs on my Mac, like I get on Windows (depending on which decade of native UI framework, widgets, etc they use).