Unions create artificial scarcity. This is good for themselves but bad for everyone else. If I'm not a member of SAG then I cannot offer my services at compet

Unions create artificial scarcity. This is good for themselves but bad for everyone else. If I'm not a member of SAG then I cannot offer my services at competing rates because SAG has cut me out, regardless of my skill level. This creates a moat between the poor and working class. They contractually protect themselves from being undercut by the lower classes, perpetuating wealth inequality.