Virtually no one has access to a network they own end to end that is big enough to create and test a credible alternative. Google, and the tiny number of people

Virtually no one has access to a network they own end to end that is big enough to create and test a credible alternative. Google, and the tiny number of people inside it who work on this stuff, are one of probably 10 orgs in the world qualified and well placed to do it. Other contenders would be MS, US Navy, Apple..who else?