Microsoft should be terrified of SteamOS

Yes, it's only a fraction, but most of the rest is going to SaaS through web browsers or mobile apps, because companies get to control and force subscriptions that way, but has a side effect of targeting a browser as a platform rather than an OS. Gaming in browser is more in the pain point of browsers, so it's a use case that demands OS.

But it's apparently the easiest, since Valve is already working on it. You just need to shift a significant portion of technical users to Linux and the other use-cases will follow.

Shitty japanese government and some private apps only work on windows (some to a limited degree on smartphones and Mac). Sure, I could (at least theoretically) run a windows vm for that as someone helpfully mentioned before, but that kinda defeats the purpose (and isn't really great for less technical folks).

I imagine some other gov/biz apps also have the same issue.