I’m not sure I understand your point exactly. What exactly does the libertarian philosophy say about unions? A union is essentially just people who choose to associate with eachother and act as a single entity under an employer; in a free market, their bargaining power would be proportional to their size — its growth would impact the pool of potential employees that could be hired outside of the union. There could be, for example, laws in place which prevent a company from firing a union, which a libertarian would generally oppose, but a libertarian needn’t necessarily oppose the concept of unions, imo.
I’m not sure I understand your point exactly. What exactly does the libertarian philosophy say about unions? A union is essentially just people who choose to associate with eachother and act as a single entity under an employer; in a free market, their bargaining power would be proportional to their size — its growth would impact the pool of potential employees that could be hired outside of the union. There could be, for example, laws in place which prevent a company from firing a union, which a libertarian would generally oppose, but a libertarian needn’t necessarily oppose the concept of unions, imo.