The licensing of the music on certain movies didn't anticipate the internet. And the studios never came to an agreement. As a result you can buy DVDs of movies like https://en.wikipedia.org/wiki/My_Fair_Lady and https://en.wikipedia.org/wiki/Bullets_Over_Broadway, but you can't rent them off of any streaming service. Given that most of us no longer have DVD players, they seem destined to only survive in pirated copies. If that.
