Well of course they aren't! Unions are there as a way of leveling the power balance between the owners and workers. That unions still terrify big companies to t

Well of course they aren't! Unions are there as a way of leveling the power balance between the owners and workers. That unions still terrify big companies to the point of firing organizers or closing entire locations should be telling. They're not around to prevent every inconvenience, they're around to prevent abuse of the workforce. For example, if the Games Industry (using them as an example because they're notoriously the worst work-life) unionized, a shop could tell their management "No, we will not engage in crunch for a month." Like how a fire suppression system doesn't prevent you from burning your food, unions are there to prevent bigger issues.