With a series of: growth then test,then growth then test again; a company is able to reevaluate and recover after a failed test inlieu of constant growth until they encounter a bad year from which they may or may not be ableto recover.This is simply prudent risk control.In sustained growth a company grows beyond its people and systems so often that they never really have the same organization long enough to truly test it, and are at constant risk with an ever changing team.In some cases it's just a matterof time.