A lot of critiques of capitalism (not to discount them entirely) ignore factors like consumer and inter-agency choice. And ironically, "free market"eers ignore the importance/power of unions as a market mechanism. We collectively have the ability to stop using companies that abuse consumers, the environment, etc., but largely fail to use it and have developed a culture of ridicule against people who do. Unions are a critical factor in suppressing corporate abuse of workers and consumers.