We must put an end to gatekeeping behavior. The free market has its flaws but having your market (or your entire economy!) regulated by a large corporation really is the worst of both worlds.
The word 'regulation' implies some sort of rather severe punishment if you disregard it. Technically speaking I don't think there is a law (or regulation, either) on the books on my country so minor that I couldn't theoretically get arrested or have all my assets taken away from me if I absolutely, publicly, and persistently refuse to follow it. Even practically speaking, I'm not sure how far disobediance can be push…
But do they? Or do they just find the best deal on facebook, and then select that deal? In which case, you end up with defacto regulation by facebook because if they choose to remove your deal, you are effectively being regulated by hidden rules you have no control over.