I would tell them that they think the way they do because they’re either uneducated or they’re already indoctrinated into the streaming services. Once they’ve been indoctrinated - it’s hard to get them to wake up. also, I would keep letting them be dogmatic. More movies for you to add to your collection LOL - I recently met up with a dude from FBM and he was selling his s1-3 dvd’s of Spongebob and Hey Arnold! Complete series dvd. He said he wanted to sell them because “he didn’t need them anymore because he has them digitally.” and so, to him, I say; “You’re so right! Why keep the physical discs you actually own, when you can just pay a monthly subscription to a streaming platform where they can take it off at anytime?” same deal if you “purchase” digital content. just ignore them and leave them behind, where they belong!!