Capitalism has flaws and number of them, no doubt, but best of options available on table. The only way out is improving Capitalism, not subverting it, but if that is your choice, many nations tried that and have failed miserably.
If you love Price Controls, go ask Indian farmers the havoc it creates
If you want fixed exchange rates, go look at Venezuela and black markets
If you want subsidies, look at Venezuela or any n number of nations, where smuggling is rampant
The alternative paths are taken the better ones ended up as dead-ends and the worse ones, swallowed people like quagmires.