'Capitalism' and the economic system are two different things. We can utilize the existing economic system to solve the societal problems of unemployment, poverty, unsustainability, and even taxation without so much as mentioning 'capitalism'--which is a mode of production, not, to reiterate, the economic system.

If curious: "Economic System Not the Problem: It just hasn't ever been utilized as well as it could be" (here in Medium, but not behind the paywall).