If this were isolation in a digital universe you'd end up with eternity in a questing/grinding RPG or something similar. That sounds like hell if it's even a form of consciousness. Eventually something happening in the outside world would destroy this system and everyone would die.
There are open, growing, learning upward ascending futures and closed, repetitive, conflict-ridden downward spiral futures. Some kind of consciousness uploading without expansive contact with the real universe is the latter.
