Here here. March's point is also that if you piss off 99% of the potential market, you can still make a lot of money. He's addressing the 100% fallacy, the idea

Here here. March's point is also that if you piss off 99% of the potential market, you can still make a lot of money. He's addressing the 100% fallacy, the idea that you have to satisfy 100%. He's pointing out that that's not necessary