That might be OK provided the online library was permanent and couldn't suddenly be yanked away as often happens with streaming services now. Some streaming services are already available for old movies, but their film list is often limited and there are few of the extras I like. Some studios have withdrawn older films from circulation. However, what I like about TCM isn't just that it shows old movies, I like the hosts and the special segments that give you more information and stories about the making of the movies, the special segments like Film Noir and Silent Movies, the documentaries of classic film stars, and so on. I doubt that much of that would be available online. I do think TCM still serves a useful function in preserving and showcasing classic films, and I hope that when cable finally does fade away completely that TCM is able to move fully to streaming or whatever networks are available at the time. It's listed on some streaming services now, but the streaming service lacks some of the features the regular channel offers.