The [ONT → OLT(+BNG)] → Internet] sections of the paths will continue to be owned by commercial entities that can still be the subject of court orders and/or government pressure.
Even if you were to roll your own cable in the ground to your own ONT/OLT/BNG at some point you will need to acquire IP transit or peering from other commercial entities.
Even if you were to roll your own cable in the ground to your own ONT/OLT/BNG at some point you will need to acquire IP transit or peering from other commercial entities.