“Similar, I suppose, to companies colluding for price-fixing.”
Price-fixing would pertain if the defendants (the advertisers) were in the same industry as the plaintiff (X.) Obviously they are not.
“Price-fixing would pertain if the defendants (the advertisers) were in the same industry as the plaintiff (X.) Obviously they are not.”
No, dummy, price-fixing is a crime against the buyer, which is X, so they do have standing.
You really do not understand law at all, do you?