The Federal Communications Commission could legally repeal net neutrality which would remove the rules preventing internet service providers from throttling specific sites or services. The FCC can now preemptively stop states from adopting their own, stricter rules. Notably, the FCC can still object to individual state laws but it can’t declare that any stricter laws automatically violate its rules.
The ultimate solution for net neutrality advocates is still national legislation. Several US Congress members are promoting the Save the Internet Act which is a bill that would reinstate the FCC’s old net neutrality rules. They could also appeal over the state preemption section but it mainly suggests that we’ll start seeing the fight for net neutrality heat up at a local level. Nobody is sure if it will actually stay at the local level or not.