Originally posted by Mister Mets: "For some reason, disappointing a kid is seen as worse than screwing up a business deal. And some of the heroes are given so much leeway because they're so indispensable, in the ways a high school teacher isn't. The careers you mention also all serve to put the hero in the thick of the action."
Unless, say screwing up that business deal causes several plants and factories to be shut down all across New York, causing many of the parents of the students that attend Peter Parker's classes to loose their jobs.
Seems to me screwing up a business deal would have far greater consequences.