Can we quantify a bit more? What numbers mean a "minor success?" What numbers define one that's big enough to be worthwhile? Also, I don't see buyouts discusse

Can we quantify a bit more? What numbers mean a "minor success?" What numbers define one that's big enough to be worthwhile? Also, I don't see buyouts discussed anywhere in the article. Lots of those minor success founders will want an exit as well, and when they sell their business, the investors get to exit as well.