Ah, the good ol' communism, never fails to occupy the minds of idealists despite all the bloody horror of the 20th century to prove it the starightest road to hell paved with best intentions ever.

How does intellectual work happen (beyond doing it for leisure) in a world without IP?

In a utopian world of abundance where we could all be the independently wealthy nobles of the 18th and 19th century who did intellectual work for fun: great. In the world of today where people need to be compensated for their work: what happens?