[supermw]

I could keep throwing money into my stock portfolio, did I make it better, or worse?

The only metric that matters here is ROI.

Did YC increases its ROI and produce a higher percentage of successful startups during Sam Altman’s time? This is the question to answer, and the one upon which he shall be judged. Everything else is pure vanity.

[ganeshkrishnan]

Stocks are very different from startups. For one, if YC invests even in something absurd like "Tinder for Potatoes", the value of the startup goes up.

You can't achieve the same effect for stocks unless you are investing millions in low cap stocks to prop up it's values and even then short sellers will squeeze you out.