Or even if you provide something useful, you can still not get the value you deserve because capitalist can create a monopoly and underpay you as you still need to eat.
Even in the smallest groups, like a small village or a hunter-gatherers in Africa the algorithm is the same.
Free markets usually aren't too prone to long-term monopolies. There are some parts where markets fail but most "monopolies" aren't because of market forces, but because of regulation.
