If the fridge is in my house and hammers aren't banned yet then that fridge will not be showing me ads.
In many places, you can't legally buy gas outside of a gas pump that have a strong tendency to show more and more ads.
That said, I doubt these companies would sue because of the risk of setting a precedent in favor of the consumer. Scary legal letters (e.g. cease & desist letters) perhaps. But given enough customers, at least one will have the resources to hire a good lawyer and fight it all the way to court.