Is this extortion from my employer?

I work for one of the two giant satellite entertainment providers in the United States. I'm not going to name which one. They have recently told employees to get their service "or else". I've gone to HR and asked if that means I'll lose my job if I refuse and they basically confirmed that I will be fired. We have until a certain date to get it or we will lose our jobs. It was not in any contract I signed or in any employment prerequisite. Is this legal? Is it not extortion? I work in a right to work state with very few/no employee protection laws.