Google and Netflix aren't monopolies. And neither are any of the ISPs.
You could definitely consider some of the ISPs a monopoly in certain regions but that doesn't apply in this case. Either way your antitrust argument makes absolutely no sense.
Many are, in areas where there is only one ISP with high bandwidth. That's exactly why net neutrality is critical. Monopolies among ISPs combined with data caps allow them to harm all Internet services that compete with other business they own (such as video and etc.).
The vast majority of Americans have but one choice for wired high speed Internet. Cable cos like to pretend that they compete with DSL, which is a lie.
You could definitely consider some of the ISPs a monopoly in certain regions but that doesn't apply in this case. Either way your antitrust argument makes absolutely no sense.