If you hired landscapers to mow your lawn and they refuse to do so because they spotted political banners on the aforementioned lawn they don't approve, what's going to happen? Forget the reason, what's going to happen if you hired somebody and that person did not show up to work?

Same thing with the companies, they hire people to do work just like people hire other people. If hired people don't want to work - that's fine, just let them go. I am pretty content with this way of society and don't see how changing it can make it any better.