[mbesto]

You're not incorrect. But I always like to think there is always a possible ;) The reality is agile is such a strong buzzword in 'The Enterprise' now that you can't even avoid it anymore.

The one that was successful was a $250k project - 3 months. Client insisted fixed price and done "in agile". We estimated the actual work was only 6 weeks, but knew they'd change their minds 100x times (they did). We didn't optimize the timeline properly (as you are insinuating, it's almost impossible to predict), so our margins ended up being quite low.

I do know one company which successfully does agile (within a company that does $100bil in rev). They budget the whole year out for X amount of employees and then do everything in 3 week sprints. They basically "fit in as much development as they can with the resources they have" and disregard the high level 3-year "integration plans" that the management consultants put together.