I like very much your statistics:
1.- 50 % of YC startups will get success.
2.- Only 1 of 1000 of startups will get success.
3.- you can foresee the future of your startups:
disaster perhaps with one exception, the one
that thinks by himself.
Don't forget the numerous articles that indicate that nearly 100% of YC startups have found success. Quite a heady business this entrepreneurism is ... 0.1% chance, 50% chance, 99% chance ... it's all so ... "dynamic".