if you don't balance people not wanting to do the low grunt work, you'll only get inexperienced or low rank employers to do it which is extremely hurtful in the medium run (say not in a year, but you'll definitely notice within a decade)
a) Is this about firewalling disappointments and legal problems from Google's core business from the new things that will drive it for the next 20 years?
b) Will they spin out Google's Europe operations in to a separate company so EU regulatory actions have minimal impact on the rest of thier business?
c) Are there other changes they are worried about to the ad business? Proposals to change the tax status of advertising deductions (US) would hit their bottom line hard, even if it if their ad auctions algorithms continue to behave as shill bids.
Will be interesting to see how this changes the main Google business, for better or worse.
An additional bit of trouble, coming from the way Google's current profits are made, is that the profit centers are mainly perceived as less glamorous than the cost centers, which seems likely to only add to the resentment. It becomes much more explicit then, that the people doing the various bits of gruntwork needed to keep AdSense working (hugely profitable, but full of jobs like "sales" and "click-fraud arms race") are funding the people getting on the news for drones (not profitable, but cool). Not impossible to manage, and I'm sure they've thought about it, but does seem challenging.