> There's Android, YouTube, 510 Systems, and the constellation of acquisitions made to create Google Apps, at a minimum.
Buying Android hardly would have triggered anti-trust investigations given Apple's significant market share at the time, and the many other significant competitors (BlackBerry and Nokia just to name two).
Same goes with YouTube - Google bought it before it was a smash success, and before people thought that sort of thing would be a major viewership center.
510 Systems and their self driving car really still isn't a money-making center for Google (nor is self-driving technology for anyone at the moment).
Google Apps is a hard sale against Office 365, etc...
I just don't see how any one of these acquisitions, on their own, would have caused government Anti-Trust inquiries... unless your point is Google operates in too many different markets?