> I believe the copper and coax infrastructure was subsidized by the gov't and so regulations were created to require granting independent ISPs wholesale access

> I believe the copper and coax infrastructure was subsidized by the gov't and so regulations were created to require granting independent ISPs wholesale access to the (last-mile) infra. AFAIK there are no similar regulations for the fibre networks as those were not subsidized. That’s why they cut out the copper when they light up the fiber.