I have no doubt that YC provides great networking opportunities. My question was in direct response to nanexcool's comment that the cash would have given him the chance.
Yeah, but I was guessing nanexcool's reason for saying that was similar to mine and it turns out I wasn't too far off ;)
I doubt many people are just going to give up right now after rejection even (and especially) if they had a good idea, it's just that YC would have helped a ton.