Anarchy and capitalism are two extremely different things, and also there are methods of free association (https://en.wikipedia.org/wiki/Free_association_(Marxism_and_...) that allow for distributed production without any centralization OR private ownership of production/profit-driven exchange.
Granted, we're far off from these things probably, but capitalism is turning out to be a steaming pile of shit so it's good to think about what comes after without turning into a centrally-planned hell hole.