I don't think you're actually arguing the opposite point -- I think you're worrying, with some justification, about what I suggested in my last couple of senten

I don't think you're actually arguing the opposite point -- I think you're worrying, with some justification, about what I suggested in my last couple of sentences ("a new OS that will replace both macOS and iPadOS, and at that point, all bets may be off"). My suspicion is that the computing industry as a whole is inching toward an everything-in-the-cloud, ubiquitous computing model, and the vast majority of users will see this shift as a net benefit, not a net negative. I'm not convinced that simply projecting what we have now forward a few years is what that will look like, though.