I can't agree with you tbh. It depends on the distro. On Windows I can basically one-click install OpenMW and it Just Works™. I can't even play it on my distro because for whatever reason it's broken. I ended up having to flat out purge it and install the daily build to get it working. Maybe it works better on other distros, idk. Worked fine until my distro updated some months ago. When I was still running Lubuntu I had to build it from source to get it to work.

This is the nature of open source and decentralized platforms. And there's nothing wrong with that. But if anyone expects the mainstream to adopt it when ease of use has been the name of the game for the last 20 years then they're mistaken. As good as Linux has gotten, there are still kinks that need worked out before the average user will adopt it. One step towards that is government adoption. This will almost certainly lay out a stable baseline standard that can be built off of for a more coherent experience. I can see Linux competing with Windows provided it comes up to par on UX.