alt Hacker News> Imagine tearing open a busy street in NYC for a few weeks to install fiber
Or you can just run new fiber in the pipes that contained copper wiring that has most likely already been swapped out for fiber in the 1990s. Or just add better line equipment and use those same fibers already there.
In theory you would be right. In practice you have to ask all of your competitors for permission to change anything, and all the old copper is still there. They never actually swapped it out for fiber! You cannot take out any of their old copper, even though you’re sure it’s not in use by anyone, to make space for your new fiber.