They don't even like that much since it means they have to compete more for labor, raise their wages and benefits or risk losing talent or having them unionize.
My favorite are the cases of startups vowing to be an ‘ethical’ company, but lo and behold once they reach to the point of having shareholders with vested interests, that ethics goes out the window.
Boycotting can actually hurt the union, if market conditions suddenly worsen, it doesn’t matter if it’s because of boycotts or market conditions, it takes away some of their leverage. So I wouldn’t stress it too badly.
Organizing your own workplace and participating in solidarity events if you’re able are good things to do to help. eBay’s union has a Twitter, @tcgunioncwa I think it is, they sometimes post calls to action and such that are a good way to directly support the workers.
not too knowledgeable on the subject but i had a similarity in mind: in chemo, sometimes to kill the bad cells, u have to hurt the good cells too, and after an afterthought, u might have to fully kill the tumor so it doesn't metastize and spread. Ebay should be no more if its business model depends on busting unions