I thought it only applied to the government. I'm not american, but the fact that private companies fire people for speech is also weird to me. I don't see the

I thought it only applied to the government. I'm not american, but the fact that private companies fire people for speech is also weird to me. I don't see the argument why this is right: is it because companies should shoulder the image weight of such decision, and because "there are other rival companies"?