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.
You did not that’s correct, that was meant more towards all of the people in the thread in general worshiping steam as a corporate savior. That was poor writing on my part. The things you mentioned are almost word for word the conjecture you find on Reddit and has not proof itself. I would love to see a copy of the MFN myself. Valve definitely admits they ask developers to offer similar prices according to their responses to other users, but won’t deny it or produce a copy themselves of any MFN. All I’m saying is they’re in a well deserved anti-trust suit that covers several topics beyond the MFN as detailed in the links I did provide. Their motions to dismissed have been slapped down because the judges feels there’s enough evidence to proceed on at least some of the claims. I guess we’ll see whether the case can prove itself or not and neither of us will really know until all of the evidence is presented. I’m not blindly believing they must be guilty, but it’s hard to say Steam isn’t a monopoly. There are plenty of other reasons to dislike Steam, but arguing that with the other people here is a bit like arguing with gun owners. People are willing to dismiss their principles about things that affect the macrocosm quickly when it could deprive them of something they personally enjoy.