And that's the whole classic catalogue - when you bear in mind that kids will happily watch the same old Frozen DVD over and over again, I don't see it as a huge compelling offering. Even adding all of Marvel, I still believe people will prefer to pick and choose their favourite individual media over an expensive subscription.
It's the continuous flow of new and unique TV/movies that is really working for Netflix. Disney just don't output anywhere near the same content hours to make a subscription worthwhile, and kids probably wouldn't care even if they did.