Earlier quoted context omitted.
If you're already rich (as Justin is) and realize how big an upside can be, why not flush the toilet and start over? For a guy like Justin, time is the most precious commodity because money is meaningless.
This is great advice for an established founder, which might be why it's simultaneously one of the most damning reasons to avoid working for one.
One of my earlier startups had multiple acquisition offers which would have made all the shareholder employees quite happy, but since the offers wouldn't have moved the wealth needle of the already wealthy founders by an order of magnitude, they turned them all down.
Years later and $100m+ of VC money burned the place went bankrupt and I now have some very expensive toilet paper in a folder somewhere.