Financial Independence, Retire Early. It's a whole subculture online, based around the idea that if you can grow your investments to ~25X your annual expenses, you can safely stop working and live off those investments.

https://www.mrmoneymustache.com/2012/05/29/how-much-do-i-nee...

In some kind of economic AI apocalypse, though, who knows if the assumptions behind FIRE will hold.

We've had other "apocalypse" scenarios before (industrial revolution and manufacturing automation) where we successfully transitioned to a new way of living and being productive. The optimist in me says that there's nothing special about AI this time around.