People age out of wanting to sit in their bedroom with a handheld and become adults who have living rooms. For home gaming there will always be demand to play games on a real sized screen.

I think the steam deck proved otherwise too..

I haven't had enough motivation to sit on my couch and game after a long day ..

But the same game, in bed, on my deck was so much nicer..

All I can now say is having a dedicated device, that's not your laptop/computer to play games is definitely a market - be it Steam machine (/custom builds), hand held gaming, or just regular consoles..

Yeah so get a PC and install some games