The rule took effect in April 2024 after the FCC rejected ISPs' complaints that listing every fee they created would be too difficult. The rule applies specifically to recurring monthly fees "that providers impose at their discretion, i.e., charges not mandated by a government."
ISPs could comply with the rule either by listing the fees or by dropping the fees altogether and, if they choose, raising their overall prices by a corresponding amount. But the latter option wouldn't fit with the strategy of enticing customers with a low advertised price and hitting them with the real price on their monthly bills. The broadband price label rules were created to stop ISPs from advertising misleadingly low prices.