It’s not that simple unfortunately. Sure there are national unions, but they’re very specific in the industries they operate it. They are long standing institutions with the influence and funding to boot, your local tenant union or random coffee shop “union” does not have the resources or influence to make any of that happen. I knew some people in FL who tried to unionize their coffee shop they worked for and the owners just straight up shut the business down instead of capitulating, they were all out of a job after that.