The whole idea/execution riff is reductionist.
Some ideas are more or less obvious. Twitter is a great example: there was basically no idea, it was all execution and marketing.
But other ideas are huge. Larry and Sergey's idea of how to index the web was genuinely novel. The best team in the world could have executed on pre-Google search tech and would have got nowhere.
It all depends on the idea: some are just so much better than others...
It all depends on the idea: some are just so much better than others...