Not sure what you'd consider evidence, but the Wired article by Steven Levy (the guy who wrote In the Plex) contains this quote: No one expects an instant succ

Not sure what you'd consider evidence, but the Wired article by Steven Levy (the guy who wrote In the Plex) contains this quote: No one expects an instant success. But even if this week’s launch evokes snark or yawns, Google will keep at it. Google+ is not a product like Buzz or Wave where the company’s leaders can chalk off a failure to laudable ambition and then move on. “We’re in this for the long run,” says Ben-Yair. “This isn’t like an experiment. We’re betting on this, so if obstacles arise, we’ll adapt.” http://www.wired.com/epicenter/2011/06/inside-google-plus-social/all/1 http://www.wired.com/epicenter/2011/06/inside-google-plus-so...