Previously playing a shared game locked down the entire library, now it just locks the one copy of the game.

This is by far the best thing ever for me. My 10 year old son is always hogging the damn thing and I never get to play. 😂 Thank you valve for locking only the game. I’m so freaking happy, you have no idea. I still don’t understand the cooldown part, but meh, I got what I’ve always dreamed of, and that is what I care about.