I slightly disagree here. Not really challenges, but business models. There is no free lunch so to say. Maybe there will be highly personalized subscriptions t

I slightly disagree here. Not really challenges, but business models. There is no free lunch so to say. Maybe there will be highly personalized subscriptions that allow for hyperparameter tuning in this way. I doubt this is something Netflix fears, it is something they gonna embrace. Computation of such movies won't be cheap.