Not about the internet but can we build a network base on other forms of communication? Say, someone, launch a satellite that take this exclusive signal to keep and maintain an exclusive blockchain. I don't know how dumb or possible my question looks since I'm very noob about this but I think if a crypto project is able to do this, they don't have to worry one day, the internet around the world go down.
A Satellite for a blockchain infrastructure would be quiet slow and expensive, nobody would afford it. Internet is the reasonal infrastructure at this time, its fast and cheap, also it can be accessed on most place in the world.