Seems like they've chosen a different business model back then and since it didn't work out so well (compare Mac/macOS market penetration to iPhone/iOS) they changed it to something that allows them to capture more revenue and use the money to develop the platform much further.

And they're not forcing it on Mac because that would cause outrage and people not upgrading the OS, and desktop/laptop computers are dying anyways.

Also, App Store on Mac definitely has fees.

Perfectly understandable IMHO.

(Webkit might be a platform to Google but it's not from Apple's point of view, it's merely one part of their platform offerings)

TIL that producing MacBooks isn’t a good business.

Yes, it's much much smaller than the iPhone business. Of course, it'd be a huge company by itself, but Apple got to $1T thanks to iPhone, not Mac - by far.