Once you cripple or hobble the larger aspects of what makes cinema great ( see regulation of monopolies, and encouraging a healthy variety of offerings at the theater as a couple ) there's a domino effect that brings crashing down a lot of the minutiae of what makes cinema great as well. In this particular case one of those minutiae is that not only is there a lack of variety of cinematic offerings in the macro, we are seeing a lack of variety in faces and people in the micro. In this way Hollywood seems to be in the era that most closely resembles the studio era in the Golden Age than maybe the new Hollywood that formed with directors like Coppola and Scorsese and a new type of A-typically hot actors like Pacino, Hackman, Hoffman and Nicholson. Notice I said closely in regards to the era it resembles, because it is not a one for one and it is still just a resemblance. That era still made use of its “otherish” beauties like Bette Davis, Joseph Cotton, Peter Cushing, Vincent Price and Peter Lorre. Also, notice I still place the word hot in there because these actors were in fact good looking actors, but it is not the type that immediately grabs you and arrests you from jump. It is not Cary, or James Mason, or Roc Hudson beauty. It needs spurring on, it needs some underneath qualities to follow to move it into that zone of attraction. Those actors in places brought those qualities, but they also had something the more typically beautiful actors struggled with. The ability to be pathetic, to be absolutely repellent, ugly not as an aesthetic, (almost every actor has some quality of beauty) but as a personality trait. Chris Pine can struggle here though he's actually pretty damn good, Hemsworth will definitely struggle, Tom Holland..forget about it. Chris Evans, even Timothee Chalamet for all his character traits and abilities would and will struggle. The future and standing leading men of today they don't have it. We have homogenized the face. The actors don't look like identical twins, but a great deal of them do look fraternal, and in this is a fraternity. Sometimes it's not even that they don't have the ability it's that we won't let them, or our minds won't let them, because the industry won’t let them. We know that because we have had eras where plenty of these types of “oh I don’t know normal” - looking people were our greatest from Jimmy Stewart to Tom Hanks and the audiences accepted and loved on them as leading men. Nobody batted an eyelash when Jack Nicholson played a man who could woo just about any woman for years.