Nest was acquired and was already a mature and popular product. They by no means built it from scratch. And enterprise server products are probably outside the scope of what we are talking about, which is consumer electronics. I can build you a pretty decent server pretty quickly. I wouldn't know where to start to create a smart watch that had good battery life, great screen, great app ecosystem, great sensors, and didn't cost over $400. As far as I know, no consumer electronics Google product had launched and was an instant success. All the first product reviews I've ever read sounded like this: "it's a great first start and as a nerd who knows about these things I enjoyed some innovative parts of it, but it's not ready for prime time. Maybe next year they'll have a more polished product."