If Google+ stemmed defections to Facebook that is a good thing. But hopefully a lot more is in store than what Google+ delivered. It was not nearly enough to undo Facebook's market dominance.
Eric might have found another solution to the Motorola merger if he was heading the company. But who knows if it would have been better. He already passed on both Palm and Sun. Together they would still have been much less than Motorola and probably twice as useful.