Lessons I learned from reading this article: * The author had multiple opportunities to return to freelancing and stop working on a tool that he fully realized

Lessons I learned from reading this article: * The author had multiple opportunities to return to freelancing and stop working on a tool that he fully realized was morally bankrupt. * Then, even after his partner left, the author used gamification to hook people into using the app, recruiting people into his pyramid scheme, and exploit people in countries underserved by payment systems. That's some pretty solid lessons there.