What’s Ubuntu’s “particular madness”? They used to be a little FOSS-only, but they’ve chilled out on that.
I agree on the other points, though, with one caveat on both.
No matter how many games run on linux, it won’t be enough because there aren’t ever going to be linux exclusives. Without linux exclusives, there will always be more games that run in Windows than Linux, even if the majority of them run in linux AND run better than in Windows.
Office sounds like a big deal, but Apple managed to prove you don’t need it. The real problem Linux has with office is that it has no well-marketed office suite. There’s nothing wrong with Libre- or Open- except the complete lack of advertising and passive training to its nuances that we get from MS and Apple office products.
It’s not that linux can’t win on games or office. It’s that the game is rigged against it on both. It took me a few years back in the early 00’s, but I quickly realized that there will never be a “year of the linux desktop” regardless of how good Linux gets at games, office, user-friendliness, or anything.
And that’s ok because MY life is easier when I use linux.