First, I would posit that Google+ encroaching into Youtube has been a negative development. You say that "it doesn't have to be that way" w.r.t. acquisitions h

First, I would posit that Google+ encroaching into Youtube has been a negative development. You say that "it doesn't have to be that way" w.r.t. acquisitions having a negative impact on an acquired service, and I agree that in theory, there really is no way the product has to be damaged. But there are agendas and incentives, and more often than not, we have seen first hand that the acquired products do get damaged. Maybe we can get lucky at times like Youtube, but our scar tissue didn't form from nothing.