If they only had successful products, that would be a sign that they didn't innovate enough. If you innovate manically, you get Google Wave and Google+ amongst

If they only had successful products, that would be a sign that they didn't innovate enough. If you innovate manically, you get Google Wave and Google+ amongst good products. (However, this doesn't work in the other direction: having a few duds doesn't prove that you are innovative.)