Theoretically replacing capitalism with something else is not the issue. (As long as there are accurate supply-and-demand signals for efficient allocation of resources).
The issue is that people ideologically want to "set" inconsistent supply-and-demand curves. And since there's no signal things look fine and dandy initially. And then the usual smudging of the numbers start to happen. ( https://slatestarcodex.com/2014/09/24/book-review-red-plenty... )
Of course, in a capitalistic system there's a very crude exchange rate for the things we want and the things we have through the profit motive (with all the speculation and technological (im)possibilities and everything added in), but it's usually more "correct" than numbers set by committees of people really really wanting to have something while denying some specific - usually hard to separate - aspect of that. (For example lot of people really don't like it when people 'inherit' easy money for very good reasons and this gets amplified when it comes to real estate, and this is a very big factor why a lot of NIMBY ideas found good traction with young "progressives".)
Theoretically replacing capitalism with something else is not the issue. (As long as there are accurate supply-and-demand signals for efficient allocation of resources).
The issue is that people ideologically want to "set" inconsistent supply-and-demand curves. And since there's no signal things look fine and dandy initially. And then the usual smudging of the numbers start to happen. ( https://slatestarcodex.com/2014/09/24/book-review-red-plenty... )
Of course, in a capitalistic system there's a very crude exchange rate for the things we want and the things we have through the profit motive (with all the speculation and technological (im)possibilities and everything added in), but it's usually more "correct" than numbers set by committees of people really really wanting to have something while denying some specific - usually hard to separate - aspect of that. (For example lot of people really don't like it when people 'inherit' easy money for very good reasons and this gets amplified when it comes to real estate, and this is a very big factor why a lot of NIMBY ideas found good traction with young "progressives".)