it seemns the #steamdeck wasn't revolutionising much of anything, the idea was tryed before, with varying success. Sure, while you could think of the gpd win and not be far from the truth, actually there was an even earlier attempt at the same thing by #samsung. Since this was launched in the xp era, of course it didn't catch well at the time, however it's still an awesome thing to think about. In short, it was a windows xp powered tablet, with a touchscreen, game controller and stuff like that, and while the specs are horible by today's standards, it was quite an achievement back then. For more information, here's the video where I originally got the information from, enjoy!
https://www.youtube.com/watch?v=aYo02ZCAhSw