This is not completely true at all - unions also usually have an army of lawyers that will act on behalf of the members if needed and can be used as a pooled so

This is not completely true at all - unions also usually have an army of lawyers that will act on behalf of the members if needed and can be used as a pooled source of capital to lobby (or anti lobby against corporations). They can also provide other resources like training, pensions, mental health support, etc etc. Lots of benefits!