ed: For proprietary software, as silly as it may sound, the best approach to supporting “Linux” seems to be supporting Windows and then waiting for Valve/the community to support it using Wine/Proton.

terrible take, beyond the fact that a flatpak is infinitely more convenient than using wine to run a windows program, most programs outside of games are much more difficult to run on wine because most windows software makes their own toolkit among other components. Games are one of the few things that can be done so well through wine because they are generally built on similar base toolsets and engines.

Also games are only being made to work so well on linux because the have a direct benefit to valve who wants more independence to sell their games without worrying about the platform they sell on being owned by microsoft/xbox. There is no software marketplace on desktops that would incentivize anything even remotely on that scale for regular software.