BLS you are missing a point. Money isnt the only thing at stakes. You need good mentors, advisors and backing of them to actually built a sturdy one. This $15k or $20k isnt what one wants, it works the other way, we are using YC/PG et al to learn few things we dont know. They are giving you one complete solution of taking idea to reality. The money you borrow from parents, friends et al wont come with that help. Plus YC isnt saying that u sign up for life with us, they are showing you a way by teaching you priceless things for nothing. Even if they take 99% of equity, 1% comes with 100% experience and happiness to have achieved something. Plus for some one smart, this isnt the ONLY IDEA, this is just a beginning :)