"In many ways, I’m an just an obsessive builder, and like to busy myself learning new things and making cool projects." In which case, I'd say he accomplished

"In many ways, I’m an just an obsessive builder, and like to busy myself learning new things and making cool projects." In which case, I'd say he accomplished his goals! These sound like great projects. Unfortunately actually building a product is only one part of building a successful business. I wonder how often this guy talks to customers? Learns their needs? Pain points? Did he ask anyone if they would pay for a new Javascript game engine (for example) before he wrote one? If he didn't, then he shouldn't be surprised that he doesn't understand how his products fit into the market and into his potential customers' lives. And if he doesn't understand any of that, then making money will be next to impossible.