"Disruptive rethinking of economics" is a very optimistic way to put this IMO.

The big problem I see is that there is little incentive for "owners" (of datacenters/factories/etc) to share anything with such hobbyist laborers, because hobbyist labor has little to no value to them.

All the past waves of automation provided a lot of entirely new job opportunities AND increased overall demand (by factory workers siphoning off some of the gained wealth and spending it themselves). AI does neither.