The failure of coops really puts a difficult question to the function of capitalism. Afterall, if capitalism really was about the best good at the lowest cost,

The failure of coops really puts a difficult question to the function of capitalism. Afterall, if capitalism really was about the best good at the lowest cost, you'd expect coops to be unbeatable, expert labor joining together with no rent-seeking middle man. But instead we see that capital is the deciding factor in success. The only thing unique that capital brings is an abilitiy to scale. Scale enables efficiency and monopoly which IMO are not always mutually exclusive. But it should be a more serious question in economics just how much of either is most responsible for the ultimate rewards to capital.