Resources are currently allocated through paid work. The biggest unknown is how that will be replaced once jobs are gone. My worry is who will make that decision.
To add context to that question, it is important to consider that life expectancy will (very) soon be 500-1000 years. With that backdrop, consider two possible future worlds:
1. A world of exploding population living for 1,000 years with natural resources strained to their limit.
2. A world with a population cap (say 1 million people) of incredible wealth, and leisure for your ~1000 year life-span.
If you were a member of the billionaire class who, as a group, possess the greatest ability to control which of those two scenarios plays out, which would you choose?