I think the $15 minimum wage would be a good thing but I don't think its gonna make it. I do think there will be an increase though. I have had problems with business and unions for a very long time. One of the problem with unions is the same problem that politics has - both tend to go too damned far. I remember, for instance, when the auto workers pulled their members out because General Motors refused to pay for magazine subscriptions for the bathrooms. They lost a lot of memberships when union management just went too far. I de-certified two unions at a time when it was almost impossible but it was also a time when union members figured out that their dues were just waaaay too much.
I am not sure that just about everybody, at one time or another, tend to go waaay to far. That is true of individuals as well as groups and businesses. The simple fact, I think, is that going too far is something that everybody should watch out for because, in the end, it tends to really put those involved into the exit line. Gods need worshippers and unions need happy members. When they lose those they also lose (some to extinction).