If he had survived he would have one lung and be unable to rap though. And possibly in a wheelchair.
But let's say he kept the lung and wasn't crippled. He almost certainly gets arrested for parole violation. That's 2-3 years in prison. He might have gotten out in 2000, at which point the rap landscape is completely different. Who does he sign with? Does he make up with Dre? I can def imagine Interscope pushing for that since getting Pac on an Eminem/Dre record would be printing money. But assuming Pac says fukk that, which seems likely...maybe he gets his own imprint or something via a major.
There are so many revolving pieces in this, I don't think it's crazy to suggest it might have been a wrap for Pac. He'd be desperate for money and likely take whatever the biggest number thrown his way was...but who knows if that would work.