More money means you can use more resources in production. The point wasn’t just about personal benefit. If people value the good, it would be worthwhile to allocate resources to it. Prices signal that people do.

A good’s value is the discounted present value of the future rentals. There is no moral contrast between renting and owning capital

Without prices, how do you decide which project to allocate resources to?

Prices are not capitalism. There have been prices-favoring anti-capitalists