Unions are capitalists as well.
I am not too much into labour movements but I believe they are important and to some limited extent do help workers. Striking though is their coming and the nature of their survival. When industrialization intensified in Europe in 1700 to 1800 AD this period witnessed the emergency of organised labour movements. Noticeably, unionism is directly proportional to capitalism meaning that capitalism is not an inverse proportion of unionism. They hate each other, but interestingly as capitalism increases so is the power of the unions.
The paradox however is that unions are capitalists as well. Unionism depends on membership at nominal fee. They take from already vulnerable in the form of membership money while capitalism buys labour from people at lesser price. Therefore both capitalism and unionism take from the vulnerable or poor. The only difference is that unionism play god and capitalism play devil's advocate in the eyes of the poor.
Practically, which is rather painful but a reality, no one is on the side of the poor. Indeed if COSATU in South Africa is the voice of the underpaid and exploited why if mine shafts are closing it does not take over. Surely they can do with the accumulated membership fees of over decades. It draws me to conclude that some things exist because they are just a “necessary evil”.