Union folks don’t want to own a piece of the company, that would make them part of the anti-union establishment. When you are unionized mentally, you are so against being part of the company that employs you that you would rather starve then become part of the “company”.
Union members are, for the most part, mental midgets, brainwashed by their leaders.
Most employers will screen out union oriented workers in their hiring process.
My guess is that the Hostess plants in Closed Shop states will not reopen with new owners. Production and distribution of Hostess brands will move to right to work states.