"But it’s an awkward time at Google, where a group of employees can leave, create a start-up and come back two years later through an acquisition with $50 million in their pockets."
So employees leave, create their own startup and Google happens to buy those startups. Here it sounds like a bad thing.
Yet.... a few sentences down she says , "Google needs to find a way to foster its employees’ entrepreneurial desires and talents"
Wouldn't this mean more employees would leave? If I have entrepreneurial desires, I'd quit my job and tried to pursue my own startup.
On a different note, I feel that Facebook is a trend supported by hype that can be brought down by any other hip social network site down the line. Just like Xanga, and MySpace before it. A good example is Digg, once thought to be a behemoth it died almost over night.