They could have easily crammed the Steam Deck full of stuff to make it hard to use for piracy - locking down everything, making it usable only to play games you legitimately own, force you to go through who knows what hoops in order to play games on it. That’s what Nintendo or Apple or most other companies do.
But they didn’t, because they realized they didn’t have to. It’s 100% possible to put pirated games on the Steam Deck - in fact, it’s as easy as it could reasonably be. You copy it over, you wire it up to Steam, if it’s a non-Linux game you set it up with Proton or whatever else you want to use to run it, bam. You can now run it in Steam just as easily as a normal Steam game (usually.) If you want something similar to cloud saves you can even set up SyncThing for that.
But all of that is a lot of work, and after all that you still don’t have automatic updates, and some games won’t run this way for one reason or another even though they’ll run if you own them (usually, I assume, because of Steam Deck specific tweaks or install stuff that are only used when you’re running them on the Deck via the normal method.) Some of this you can work around but it’s even more hoops.
Whereas if you own a game it’s just push a button and play. They made legitimately owning a game more convenient than piracy, and they did it without relying on DRM or anything that restricts or annoys legitimate users at all - even if a game has a DRM-free GOG version, owning it on Steam will still make it easier to play on the Steam Deck.
Hmm, seems like this is really might be getting to a point where non-viable instances are the exception rather than the rule. At least, I hope that’s the case these days.
I’m too busy to switch to Linux at the moment but if I have to it’s definitely an option I’m making back-burner plans for.
I did the same thing as you until a few months ago. I had used Linux many years ago, but never fully switched, so I wasn’t too worried. Windows has been frustrating me for years now, and one day the search bar showed back up even though I’ve told it many times to not have it. At that point I decided I was done using an operating system that didn’t listen to me and I switched over. It’s been an amazing experience. There’s only one game that hasn’t worked for me so far. I don’t remember the name, but it was a beta for a BR style game, and it was only because the anti-cheat hadn’t been updated to accept Linux, not because it didn’t run.
This sort of behavior (and other nastier things, such as introducing advertising for Microsoft services) is why I don’t trust Windows Updates and am increasingly distrustful of Windows being a satisfactory operating system.
Also I’d like it to be less bloated. Sure, fancy bells and whistles are nice to look at, but if I could make things look like Win98 again I totally would. I don’t actually need things like transparency or 3D rotation/resizing effects.