A EU ruling could say that doing business with googles ad serving platform was against EU law, which would probably reduce ad buyers in EU by at least 50% (prob

A EU ruling could say that doing business with googles ad serving platform was against EU law, which would probably reduce ad buyers in EU by at least 50% (probably a lot more). If you think that you can run a global business and skirt the laws of the second largest economy and still make a legitimate profit within that economy... Well, then you need to think again. On the other hand, if google thinks that they can do without the EU market they are free to block all EU citizens from both their services and their ad serving platforms.