Even if it is a viable case, do you truly think that the US government is going to go after a company that they're practically in bed with. Google helps the US government with pretty much any and every investigation they have. I think it's practically confirmed at this point that the NSA pays google to help them spy on people.
Plus -- google donates large deals of money to politicians and political parties, making an investigation into them a political problem as well.
Eh?
Its hard to say, but one thing to consider is they are reaching levels of power surpassing national governments. If they are going to do it, it will be sooner rather than later. I think what is most likely is they will use this as leverage to put a leash on them and bring them deeper into the government's purview.
True.
It might even be fair to say that the US government might have already done this to some US companies already. Pretty much saying that they'll allow them to control their monopoly and continue to grow, but they have to be at the whim of the US government.
Which is a pretty easy thing to say yes to.