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....
A non-steam game can be launched through Steam on either device, but Steam doesn’t sync game saves for non-Steam games, hence Toribor’s use of syncthing. Once a sync job is set up for each game’s save folder, it’ll keep them synced about as well as Steam does for native games.
I feel like the Steam Deck is the best proof of Gabe Newell's quote that "piracy is a service issue."
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....