Like even in the best of scenarios where the left isn't destroyed but can actually summon some form of revolutionary energy against capital, what is to prevent most capital investment from leaving the country as the winds begin to turn?
Is there good theory out there on how to prevent capital flight? Are there capital controls that don't simultaneously provoke capital flight?
This really depends on your country's military position relative to capitalist economies. The money is really a proxy for state violence. You can always just invent your own monetary system - the question is whether you'll be bombed for doing that.