This is great news, but obviously it's only temporary and at some point they're gonna commit to closing the store
What they need to do is a find a way to get all these legacy games onto their new platforms and let us always have access to them. There needs to be an evergreen solution to these games, where once they put out their digital games on there, it's there for as long as the network as a whole lasts, so you can just transfer your games when the next system comes out. So that when I sign in to my account, boom, all my purchases from the past couple decades are there and playable, AND the current store still carries the games from back then. I wish this happened on Nintendo when they introduced accounts on the 3ds, you buy Super Mario Bros on there and you can redownload it on any system after as long as you sign in.
edit: unfortunately, the damage was done on those Vita developers though