Textually this is a classic troll. But at least it's not an account newly created for the purpose, so I'll give you the benefit of the doubt and play along.
Let's start by clarifying your question. Did Larry & Sergey, when they started, have these business instincts about making a killing in the marketplace that you're referring to? Because if they did they seem to have been well hidden. And if they didn't, these qualities don't seem to be worth much.
Also, can you tell me more about the youth and inexperience of the people who apply to YC? No one, as far as we know, sees the applications except us.
Your last question I can at least answer with certainty: no. It takes 4-5 years for a startup to achieve liquidity. No YC-funded startup is that old; the median is only about 18 months old. Our profitability now is therefore noise, which means no change in the applicants would have affected it significantly.