Succeed with the Lean Startup like Dropbox, Grockit and Votizen. Success of your business rests squarely in your hands; learn from startup gurus like Ries, and you will reap the fruits of your labor.

Lean is a tool. It's not for every job, but it's very good for some jobs.

It's more of a rapid iteration project methodology than a tool in my view. I do agree it's not for every project though...