The real reason Marissa Mayer left Google: She had to:

As a sidenote, it’s interesting that most of the press (although not this piece) has focused on Mayer’s gender. I look forward to the time when female CEOs are so commonplace that a new one is no longer newsworthy.

In Mayer’s case, it’s also worth asking why so much coverage hasn’t focused on a different issue. Every time Apple loses one of its Senior VPs, we see stories questioning Apple’s leadership and future, suggesting that there may be significant inner turmoil.

Well, Google just lost one of its top people.

Source: Marco.org