Why don't the Europeans start their own search and ad engine?
Oh, because they would lose?
What I don't understand here is Google does not have a monopoly on search services. They're just damn good at it and the market, with several other choices including Bing!, votes with its clicks. I'm not sure I see what's wrong with that.
This isn't about a monopoly per se. The issue is that Google has got the same business unit that handles their web search operation also pushing Google services. The result is that Google is actively discriminating against competing services and since these competitors don't have their own search engine with a dominant market share to fall back they are proverbially stuck up shit creek without a paddle. It's a bit as if, say America Online, owned world's entire internet backbone and was preventing competing ISPS world wide from accessing that backbone on equal terms in order to gain a competitive advantage for their own ISP division. That being said Google has an 80% market share in the US/Europe and that pretty much makes them a monopoly in my book or at the very least something pretty close to a monopoly and monopolies are IMHO usually bad. Many of the people on this forum screamed their heads off in the past when Microsoft was doing something like this. Instead Googles army of fanboys is now out in force again trying to paint a big yellow smiley over the whole thing.