If we had started with the broader strategy, we might have gotten stuck having an intellectual debate about what should happen in the future, and required many different teams to buy our future vision without having any concrete step for them to take today. By narrowing down, we were able to iterate on the prerequisites, and delay building consensus until there was a concrete step we needed folks to take. At that point, there was no intellectual debate about whether it was possible, because most people were already operating the way we hoped they would.