In all seriousness, though, I think that decision can simply be chalked up to Doug's deep-seated need to become e-famous. Remember, this is the same man who ended his days sitting in a cubicle in this fashion:
He wasn't just adamant on putting his name out there for everyone else to remember it (he claims they don't have to, but they do). He was
hell-bent on making screaming at a camera for twenty minutes and then posting it on the Internet for the world to watch an actual job.
Hubris and shortsightedness obviously played a role as well. He thought his output was of Hollywood-tier quality and that he was capable of doing more than screaming at a camera for twenty minutes, so much so that he believed he could sustain his career with TGWTG/CA for the rest of his life. Unfortunately, he has consistently only thought about his success in the moment, never in the long run, and it's been that way from the very start, since the very inception of TGWTG/CA.
TL;DR: Doug wanted to become famous and was willing to go to great lengths to get it regardless of the cost, including handing over his soul to someone who was just as inexperienced and uneducated as he himself was. In some ways, that shows great dedication and passion. In other ways, it shows stupidity, which is why we're discussing it here in the first place.