Was android really that innovative? I was under the impression that it was written by ex-Danger people, in a style similar to their previous OS for the sidekick

Was android really that innovative? I was under the impression that it was written by ex-Danger people, in a style similar to their previous OS for the sidekick. Open sourcing it doesn't make it innovative. Likewise, OS X, especially in the beginning, was NeXT with the benefit of hindsight. Not innovative, polished.