A big difference between Apple and Google is that Google tests all it's stuff publically and Apple tests all it's stuff internally. Apple probably has a product graveyard as large as Google's. The difference is that they killed them before they had a chance to disappoint the public.
The thing about innovation is that they have to be pie in the sky ideas. Because if the idea isn't at least a little crazy then it means it makes sense. And if it makes sense, then it means that everyone else is already working on it and you're too late.