Fascinating. My old boss & colleague at Morgan Stanley, +Ben Fried
(current CIO of Google) discusses one of the strategy's to Google's engineering productivity. Choice.
"... my mission, writ large, is to make this an incredibly productive organization. A way to do that is through a philosophy of choice. We allow users, within certain constraints, to choose the toolset with which they can be more productive. That produces the best overall environment."
Sounds familiar: this is how startups operate, too.