Yeah so you just reinvented a less robust form of IP addressing.
Network infrastructure is hellaciously expensive to build, and absolutely cost prohibitive for individuals. You can’t just drop your own cable from “the internet” to your house and call it a day. You would have to have someone independently managing every switch, router, and cable upstream. That just wouldn’t work.
Your best bet would a distributed wireless network, which people can and have done, especially in cities.