Unions are workers coming together to advocate for their rights. I don’t know what you mean by the unions having an incentive for companies to make more money. Companies making more money does not translate to increased wages for workers. It translates to increased profits for shareholders. And unions do not own companies. Unions are a form of collective action against the capitalist ruling class. Workers who are a part of unions are making commitments to each other to fight for their rights as a group. They have nothing to do with what capitalist ceos or shareholders do. Not unless a union has been corrupted and is being manipulated by ruling class forces.

I am not a syndicalist, but I do think that the widespread unionization of workers is objectively a good thing. Tenants unionizing against their landlords, workers unionizing against their bosses, the working class as a whole unionizing against the ruling class.

I also push back against this notion of capitalism not being a hard and fast specific ideology that takes specific actions at the expense of workers. It is the truth. In countries that are more socialized but still maintain capitalist systems, less capitalism is still an improvement for the material conditions of workers. Private ownership of the means of production is still problematic even if there are more regulations from local government. Those things could still be collectivized and made worker owned so that everyone can have the fruits of production. And so that everyone has the same political power as everyone else.