I personally got to the blue box - but then I gave up, when I realized that to get it to actually ship I had to sacrifice nights and weekends. Which would have been maybe fine - except that I knew that I didn't get to keep any upside. I had most of the risks of a startup, but very little of the payoff. Great learning process, but for me - it only managed to convince me that I shouldn't try within a corporation, if I want to try I need to actually do it by myself.