The point is that your pizza co-op can only exist as a non-dominant form of organization in a wealthy society. Once it becomes the dominant form, everything goes to hell. There isn't a single country in the history of this civilization where this wasn't proven true. Now, you could argue that we're not "cultured" enough to live onder such utopia, but my retort will be that you need to figure out a way to experiment with it at scale first without subjecting everyone to what you think (but, obviously, not _know_) is better. As they used to say back in the day in the Soviet Union "test it on dogs first". Even Lenin (patron saint of communist revolutionaries and a murderous dictator) ended up realizing he's wrong about collectivism: https://en.wikipedia.org/wiki/New_Economic_Policy

"Exploitation of workers" is actually the greatest thing about the West. Those workers wouldn't even be able to care for themselves if they weren't "exploited", and by creating the societal pressure to do so, through moderate poverty (very few people in the US know what real, actual poverty is), and general disapproval of leisurely lifestyle, you motivate people to be productive, which ultimately benfits society. Then, once they acquire a modicum of wealth and property, they get to "exploit" others by paying them a mutually agreed upon fee in order to have some work done.

I'm technically a "worker" who is quite happy to be "exploited" by my capitalist overlords, as long as I get paid a few hundred thousand dollars a year. Sure, they make millions, and I make much less but so what?