Are you arguing that an MBA program is not "a real job"? Sounds terrifyingly real to me. I'd work pretty hard to avoid that fate.
And I wouldn't be too quick to assume that "getting financial help from your parents" equates to being relaxed and unpressured. If you disappoint your angel investors, at least you don't have to hear about it at every Thanksgiving dinner for the rest of your life. :)
"Humphrey thinks of the MBA program he is now in as sort of a backup plan in case SlapVid does not take off at the end of the summer."
"Three out of four of the founders of SlapVid are getting financial help from their parents."
I think needing money, and knowing the consequences are having to get a "real job" are often factors that can help contribute to success.