I think Nolan wants to critique the lack of artistry in Hollywod but is unwilling to meaningfully criticize profit hungry executives (whether purposefully or just through ignorance). Profit motive is ruining film/tv as everything must be perfectly engineered to maximize profits. A certain degree of mass appeal is fine but a lot of movies and TV are just hollow. Hollywood has always had a tension between the commercial and the artistic but lately the artistic has increasingly been losing out, and this has almost certainly been intensified in the past few years due to fears of the lack of profitably of streaming sites. It'll be curious to see how the strikes end up playing out. If they go poorly, it may lead to the creation of a new independent filmmaking scene/institution by the displaced workers.