3 points
I don’t get the point of playing what if.
If Linux somehow grew its market share to 80% of all users then there probably would be some form of support-based business or companies forking off their own version and building their own supported platforms, and the we end up with a bunch of closed platforms competing for all the money by offering a more polished experience for a premium.
Or none of that happens. I don’t know, this is all just make-believe because it’s a scenario that’s never going to happen.