Here is a question.

Capitalism requires planned obsolescence and is hugely inefficient

I truly believe consumers want to purchase things that can last a lifetime presumably one could make a factory that makes these items, i know for sure they can be engineered to last and be easily consumer repairable. I think the amount one could sell would be large enough with the global population that it would sustain a factory especially if it produced all the generally available common household items, the workforce could be moved from section to section as the demand for any particular product dropped because the market saturated. Even if you sold the shit for 10X the price of a normal thing and just made it a status signaling object this would work in the west while people still have money to waste on status signaling. This would be a great business to start as a co-op or worker owned and run business.

The only thing standing in the way is getting enough people to be willing to put their skin their anticapitalism game and by skin i mean invest the money to start it.