I think macOS more or less gets the amount of R&D investment that its platform revenue justifies. I also think that Apple senior management realizes that macOS

I think macOS more or less gets the amount of R&D investment that its platform revenue justifies. I also think that Apple senior management realizes that macOS has to get more R&D investment than it does currently in order to satisfy iOS, iPadOS, tvOS, WatchOS, HomeOS developers. But they will only make increased investment in proportion to the overall installed-base growth of macOS devices. I use macOS because I do mostly web site and services development, and I consider myself most productive in all aspects of computing on the macOS platform. And, yea, there are things I can't do and things that aren't as smooth as they could be on macOS. But that doesn't make the operating system user experience hot garbage.