my concern is letting the normally diverse catalog dwindle in favor of more original content. They did seem to go a bit overboard for me in the superhero stuff

my concern is letting the normally diverse catalog dwindle in favor of more original content. They did seem to go a bit overboard for me in the superhero stuff but I can live with it and some was interesting. I just don't want keep not finding shows I expect or have seen before. I like older TV series and cannot see the costs in getting even stuff from further back. Is there no market or is there a service I need to look at?