Cop-out answer. Ending capitalism and ending ST are not the same fight. I'm not confident I'll see the former happen in my lifetime, but the latter is a distinct possibility (though the pro-ST "I hate to see the sun in my free time" people have a slight edge where I live). Don't let perfect be the enemy of good.

Also I'm not even sure how ending capitalism is actually relevant. My skillset is office stuff, and until further notice humans still need to collaborate to get things done and therefore have a concept of "business hours" (though those don't have to be 8-6).

I see the "8 hours of work is too many" angle, but that problem is mostly orthogonal to capitalism. Capitalist societies can (and have) changed the standard number of working hours. Communist societies are not exempt from the concept of mandatory labor either (quite the contrary for all historical examples!). If you're looking for an economic model where everyone is free to work whenever they damn well please, I'm afraid you'll have to bring the replicator thingies from Star Trek into existence first.