Which regulators? Which laws or policies have they broken?

The failure here is more that regulation covering this stuff is very unclear. Is it anti-trust? Telecommunications?

And if it is antitrust, what is anti competitive? How is the consumer harmed? How are others being prevented from competing?

Basically you can't just say "Google bad" here. Regulators need to go from that to "Google bad, and illegal." That last thing is not clear right now