Sure, yeah, MSFT sells an OS and a cloud -- both are actually pretty awesome these days. But they only got those things on the back of performant Intel silicon. Network effects did the rest, but those network effects were, as it were, tethered to the world by the quality (and modest cost) of the hardware it empowered.
I propose that, like a hurricane moving over land, a software-platform company that loses the first battle -- for the immediate hardware-mediated user experience -- is going to start unwinding.
We don't have to look far for examples. Facebook is currently in just such a death-spiral, in no small part because Apple --- now in a place to dictate terms --- decided its users would be better off with more privacy, and cut FB off from the flows of data it needed for targeted marketing and ML training.
The ability to simply shrug off a behemoth like FB (and leave said behemoth scrambling, vainly, to own the next hardware platform) should surely be enough to get any unbiased observer's attention.
Awareness of the Home-Hardware Advantage is, I imagine, also why my former employer foists Edge on everyone with dark patterns and nagware. They're afraid of Google creeping down the stack. (Like they did on mobile.)
Leaving Apple as gatekeeper for both the desktop and mobile is essentially to submit to Apple hegemony.
I no longer have a horse in this race, but from where I sit, it looks like Apple has outplayed everyone, and the market knows it. (Hence my original comment.)
What do you think Apple will do to Microsoft, once Microsoft products are primarily accessed over Apple devices?
What does anyone do to their competitor, once they can control where, and how, that competitor can talk to its customers?
It really feels like you're not looking at the chessboard at all.