They kind of do with the GPT, but it’s not as simple as just opening a Windows exe.

Need to go through the motions of configuring per game as it’s not meant to be end user software.

And I don’t think you can publish games using it directly. Still have to do the port itself.

Well, that’s kind of my point. I can eventually run most games, but there’s a lot of hacky, manual work involved. The Steam Deck is a massive success, I think, because Valve puts in a ton of effort under the hood to ensure that most arbitrary games “just work” and that everything is wrapped up in a lovely and functional user interface.

Also, at least for now, I get the impression that the GPTK (and Rosetta, for that matter) are meant to be temporary shims that will go away in the future.