Some other ramblings from me.

Management at companies generally dont want to unionize because it generally makes the company less nimble/competitive (its obvious 99% management doesnt want to pay more for labor so i dont feel need to argue that). So yes, if u are lucky enough to be in the union when it gets created, your benifits/salary is negotiated which is cool, less variability in your future, but youll only get paid if your business manages to continue to out compete competitors.

A union example of this i had was installing robots in factories (most of the factories were unionized) (to replace some transportation of goods inside giant factories). My team and I would work with factory management/engineers to come up with plan to automate some process. Before trying to impliment it, we would need to give our plans to a union rep for approval/feedback (who wasnt an engineer). So that factory's competitors didnt have to wait for an additional approval, we would need to wait for a non technical persons feedback to BEGIN a project, your competitor might be finished with project before union approval is done.

Common story of the american factory. Company unionizes, slowly becomes less competitive, a while later goes out of business. This is why so many companies resist (legally) unionization, as in some industries it means certain death.