For Linux, it was an ABI nightmare, the Steam sandbox is based on Debian 11, and glibc/GTK/webkit can't be reliably static-linked to a modern version that Tauri wants. We also ship a stand-alone version in itch.io that doesn't have the limitations of the sandbox but it was a friction point for many players having to figure out how to meet the dependencies.

For Windows, it was a bit less dramatic, but WebView2 is controlled by Windows Update in Windows 10, Some players have it, some players don't. And requiring windows 11 and up is a very unpopular choice. Maybe could have been solved by vendoring it but also not super clean.

I look forward to give it a try again, when Steamworks Linux runtime 4.0 comes around, and less people are still using Windows 10.