It depends on the age of the kids—for the price of a Disney+ subscription you can buy ~2 DVDs a month, which at my kid's age (4 and 2) is way more frequently than they actually want to watch new movies. When I was a kid, (and I'm seeing it with my own kids) we had a tiny selection of movies that we loved to watch repeatedly. Why pay rent for that selection when you could own it for the same price?