Allow me to temper some of the glee exhibited in the comments and even in some of the reports but a key line here is: "The divvying of antitrust enforcement does not mean that the agencies have opened official investigations" It is worth keeping in mind that antitrust enforcement in the US doesn't care about whiny competitors but if the enduser and customer is harmed and it doesn't appear to be the case when it comes…
It's difficult for me to imagine the Justice Dept being able to argue that "customers" were harmed...using services that were free.