For those that pg has sponsored it has happened a few times out of ~5,000. Better odds than the lottery, for sure.

Because he sponsored those who already have something really valuable, and not just anyone.

I would not compare to lottery because a lottery ticket is bought at pure chance whereas these startup are taken onboard after very thorough audit.

He says ~30 out of 6500 companies which if you estimate two founder per company comes out at 1/433.

Most likely that this works in a small number of all cases.