[chopin24]

This theory implies a level of coordination and agreement that the US Government is simply not capable of. The group most interested in such backups (intelligence) does not coordinate with the regulatory committees, and even if they did such an agreement wouldn’t be disclosable to the public and wouldn’t hold up if demands for regulation got hot.

The most likely reason we haven’t seen antitrust action is more boring: it’s hard, our politicians are old and don’t even use email, and they’ve been consumed with more pressing matters.