Comment by drewcrawford

You misunderstand my argument, and OP's. I'm asserting something like "our children will be protected from firings when they express an unpopular opinion." This would be a regulation that applies to business, so the arguments you construct around business being a regulated sphere are actually arguments in favor of why this will happen. It is also a point that directly disproves OP's assertion that "the first amendment only applies to the government", because here it would be applied to the average employer.