Generally unionization of an organization fails when the union does not make a sound benefit case for their presence or the company already provides wages and benefits that meet or exceed the local market.

Contrary to what folks seem to think, unionization is not always a “no brainer”. Been through two orgs that went through the process, considered joining one because they presented a good case, rejected one because there was no value to the $50 the wanted to pull from my paycheck.