I find it interesting how the attitude is different when a web startup fails and Google fails. I keep reading here how startups must try out as many different

I find it interesting how the attitude is different when a web startup fails and Google fails. I keep reading here how startups must try out as many different ideas as possible: try an idea, fail early, learn from your mistakes, move on to the next one. It's a normal process. Google, on the other hand, is not allowed to fail. A failed Google project is somehow a "problem". Google is essentially a huge startup farm. Why is the attitude so different?