I don't know what the future holds for PS1 but I'll say this. I've supported and stuck with PS2 for a full year now, though never purchasing a sub, however I would gladly pay full-price for some kind of offline version of PS1 (ala minecraft classic etc...) and happily see my money go towards the further development of PS2.
I realize I may never get to play PS1 the way we all used to back in the day, but like many other of my favorite dead games (Team Fortress, Tribes...) I've always loved the ability to just run around the empty maps and relive the great times that were had by many.
There wouldn't even need to be bots or anything. A few months ago Brewko spawned all the bases with NPCs from the VR training room and they acted like killable targets. That's all I'd need