1) Constitutional Amendment
2) Would require a Civil Rights law sequel
3) Good luck with that
4) Congressional action as long as SCOTUS doesn’t kill it
5) This was a ruling that could be reinstated by the FCC.
Anything in the Constitution requires an amendment.
Rulings by SCOTUS are trickier to override (it gets complicated).
Rulings by departments can be unruled by next admin (IIRC).