I never said the FTC has or should have the authority to enact laws, or invalidate legal agreements- I asked why a corporation in one state should be able to in

I never said the FTC has or should have the authority to enact laws, or invalidate legal agreements- I asked why a corporation in one state should be able to interfere with the business of two entities in different states? And your example is exactly why - corporations have a history of absolutely trying to enforce laws or contracts upon people that have no legal standing, knowing entirely well that (among other reasons) the complications of interstate commerce make things painful.