Customers dont take sides.
Oh, they most certainly, absolutely do. Ask any traffic manager that was screwed during the last major Teamster strike. Ask one who was screwed when one of the major LTL union carriers suddenly went under. Ask one whose own company unsuccessfully tried to unionize. They take sides. I hate the Teamsters, I won't ship with them whenever I have the choice. I am not alone. During the last grocery clerks' strike I changed grocery stores to go to the one that was on strike just because I wanted to support the company. Free enterprise and capitalism.