No, it just needed a massive demographic the studios could exploit the Hell out of by taking a semi-popular novel and Spielberging all over it.
You have a good point, but you used an imperfect film to demonstrate it. Forrest Gump was just about as cynical a film as you could imagine, and succeeded precisely as predicted. That kind of cynical filmmaking, explicitly targeted at demographics with earnings projections in place before casting begins, is precisely what this AI-driven concept will end up with at its worst.
A better example would be the works of the Coen brothers, or David Lynch: Even if you don't like them personally the fact remains they have an audience, and they most certainly weren't made to order based on market forecasts. They represent the auteur theory in action, being the products of distinctive creative minds who impressed their equally distinctive visions upon them.