They will literally always pass all of their costs of doing business to their customers. That’s what businesses are and it is impossible to function any other way.

It is not in any way part of the issue. There is exactly one issue here. It’s adding these fees on top of the price you advertised to the customer with absolutely zero way for the customer to find out the actual price they’ll be charged. That’s the only thing the FCC cares about here and the entire issue. Anything else is a lie and a misdirection.