all fine and dandy until you move into areas developers simply have no clue about - compliance heavy, enterprise, etc. you mention "early", this is key. PMless

all fine and dandy until you move into areas developers simply have no clue about - compliance heavy, enterprise, etc. you mention "early", this is key. PMless agile is super simple until you have live, paying customers (as in corporations, not people). breaking existing stuff is simply not possible anymore, SLAs are in play, validation efforts, etc. throwing shit at the wall and see what sticks works in hardcore startup mode before you have a customer base. then it becomes suicidal. even in consumer space, see the various failed relaunches and redesigns.