Earlier quoted context omitted.
Founders that had had successful startups before don't count. That's why I was referring to "experience BEFORE you try to do your own thing." And yes there are a few startup founders that were older than 30, I give you Larry Ellison. However none of the 4 horsemen had founders >30, plus the other founders except for Peter Thiel had already sold their previous startups. Regarding Palantir, they had Peter Thiel as a co…
I don't want to be ageist or anything, I just like discovering facts. Except for Peter Thiel who was 31, 1 year above, only Larry Ellison is a first time founder, all the other ones where very successful before. Huffington Post is not a billion dollar company, since it was acquired for US$315 million by AOL 2 years ago.
Reid Hoffman started his first company at 30. Mark Pincus at 29 (just one year shy!). Excluding Huffington simply because it didn't meet your arbitrarily set profitability threshold is unfair.
Hell, even Google had Eric Schmidt help run the company at the start. Eric was 46 at the time, though surely you claim "but he's not a founder!"
Data is somewhat hard to collect for this topic, but see:
http://techcrunch.com/2011/05/28/peak-age-entrepreneurship/
> The research shows that an older age is actually a better predictor of entrepreneurial success, and that three other traits also correlate strongly to success: strong fluid intelligence, high openness, and moderate agreeableness.