I think that's true for every system of both economics and governance. Capitalism, or at least the early (Adam Smith era) form of it, is merely an easy-to-implement approximation of alignment, where the incentives usually go in the right direction, but even that has to have significant pressure from beyond its natural feedback mechanism to get us things like 8-hour days, weekends, and health-and-safety laws that says it is not OK to employ small children to jump in and out of bone-crushingly heavy industrial machinery while it is in operation in order to clear blockages.
