Users don't install software anymore, outside of mobile. Most things are now doable through the browser. The browser isn't perfect, but from a user perspective, it's a much better app delivery service than anything that's existed before
The only things I find myself installing recently are text editors, programming languages/command line tools, and games. What else? WSL is pretty good so I can even run a lot of Linux things from within Windows now
If I need something that needs raw power that's too much for a browser, like a database server or running an LLM model, I'm just gonna use Linux - why do I need cross compatibility?