Why Video Games Haven't Wiped Out Movies

Video games generally have a much better ROI than movies (actual figures here), to a point where you can't help but wonder why the entertainment industry is still making movies. (Status to studio executives? Status and financial incentives to irrationally optimistic individuals, i.e. actors? Difficulty of retraining talent?) But there are reasons that games haven't completely dominated the entertainment industry yet, and one of the more not-immediately-intuitive ones is that each individual product tries increasingly to keep players online for more hours. Assuming a finite number of game customers, that means that as games get better at holding onto a finite pool of player hours, newer games have to be much, much better to compete, or just be satisfied with ever-shrinking market shares. Many more observations here.