The market dominance is really the key thing here. Just like last time Google was caught pants-down violating it, anti-trust goes like this: If you use market

The market dominance is really the key thing here. Just like last time Google was caught pants-down violating it, anti-trust goes like this: If you use market dominance in one market, to stifle competition in another market, that's anti-trust! The one market is Search, the other is Advertising.