I think if kids live lives guided by rigid structure, they don't learn how to think outside the proverbial box. Free play teaches them how to do this. Remember that Steve Jobs and Bill Gates were both college dropouts, and Satoshi Taijiri became filthy rich building a videogame that recreated bug catching he did as a kid.
Bill Gates, Steve Jobs and other smart minds went through a highly regimented K-12 education. This allowed them to learn important fundamentals like grammar/mathematics/history/etc. in addition to learning proper etiquette and social behavior. This structured education coupled with their amazing intelligence allowed them to bypass college and go straight into business.
If a child is allowed to make all their own choices starting at age 8 or whatever they will probably be the smelly, relatively low IQ, and undisciplined kid as the Cracked article points out rather than a Bill Gates or Steve Jobs.
Structured education is the base from which creativity and intelligence is allowed to flourish. Successful college drop-outs are an indication of success for the K-12 education in preparing the high-IQ and innovative minds to jump straight into business.
