Despite the fact that they were roommates once and see each other pretty frequently in Hollywood, believe it or not, The Disaster Artist is the first film that sees both Francos working as co-stars. The reason behind the long wait is reasonable though, according to what Dave Franco said in a recent Toronto International Film Festival interview:
I don't know, I didn't want people to think I was riding his coattails. I just wanted to do my own thing... To be completely honest, when I was first starting out, everyone knew who he was and so I just made a choice that I just wanted to do my own thing for a little while. But, after a while, it felt like the right time and the right project.
With his TV and film career starting up only a couple years after James Franco made it big with the Spider-Man movies, it's no surprise that Dave was not only afraid of living up to his brother's reputation, but also he didn't want to get any special treatment because of the familial relationship.Read more at HollywoodReporter