I consider that 'the option' for when a building owner refuses to re-wire with something that can be serviced by metro-Ethernet. Ethernet is, of course, ~90-10

I consider that 'the option' for when a building owner refuses to re-wire with something that can be serviced by metro-Ethernet. Ethernet is, of course, ~90-100 meters (not 500) but most MDUs need to have utility closets/areas within 100 meters for other reasons anyway; so you often there can either be copper or fiber back-haul links past that first switch. The major pain point is probably neighborhoods where the exposure to outside conditions means increased likelihood of some idiot trenching incorrectly and/or disasters where high voltage might come across the line (making fiber to at least the side of the building preferable for safety reasons).