I'm afraid i stopped reading when i saw the word instant, without any kind of qualifier.
protip: light does not travel at 300 Mm across fiber optic cables, it's slower. It takes ~40 ms to get from japan to california via fiber optic cable. The east coast of the us is more like 55 ms. That of course assume a single signal, which obviously isn't the case. It will get slowed down as it hops through various servers.