Relevant: http://thinkprogress.org/election/2012/04/27/473096/romney-b... . Although it is a weird dichotomy if you think about it. People let parents pay for their college to the tune of $100k+ and don't feel any obligation to justify or defend the investment.
"College" is in this case a proxy for "entrance to the socially-defined middle class". Parents in general (or at least the middle-class ones that would have money to lend/give for college) want their children to be at least as high in the social hierarchy as they are. Financing someone's business is much more of a mercenary decision; "do you run your own business" isn't really a social class marker in the way "did yo…
Why would you believe that parents who would selflessly spend $100k+ on college without expecting any personal monetary ROI wouldn't offer money on the same terms for their kid to start a business?
In either case you're buying experiences and trying to create opportunities for your kid. Even from a purely educational perspective, launching a business can be far more educational than lots of college programs.