Steam basically is PC gaming at this point, which is still a massive market that is almost as big as the entirety of console gaming.
I know there are those out there, but I would be slightly surprised if a PC gamer didn't know what a Steam Deck was in 2026.
As someone who has pretty much every console system and most handhelds, I didn't spring for a Switch 2, and it is for the exact reason the thread parent mentions. I do like Nintendo games, as they are consistently high quality, but they are not usually graphics reliant for fun, and the Switch is good enough still, and I don't love paying $90 USD for a single game when I can buy $5-20 games on Steam and play them across multiple devices.