There's risk and then there's prudent risk. Taking a 12 month sabbatical to focus on the startup would be a prudent risk. And, it's going all the way, just for 12 months. If you don't know in 12 months if the business will succeed, it probably won't (especially in this space). Anyway, I wish the guy lots of luck and success. I supposed if he makes millions, he can always go back.