That’s the US social reality, there is some little place called ‘rest of the world’, where stuff can be different. I assure you that India and Pakistan and Africa still sell loooads of bootleg DVDs (that will be impossible to give precise numbers), and also that Japan has both still strong rental and collector cultures of boxes of physical media of anime and other audiovisuals (both blu-rays and dvds in that case). Not to mention bureacracy, like archiving stuff for official purposes (police cases, etc) still overwhelmingly done on DVDs. DVDs are still the most predominant physical media by far.