The instant juggernaut that is Disney+ might as well be a blueprint for how to excite a subscriber base.
Start with a long history of classics, and occasionally throw some in the "Disney Vault." Younger viewers may not know this, but Disney has always taken pains to make their content collectible and as rare as possible. VHS and DVD versions of classics were given limited release and then "vaulted" to create scarcity.
Because Disney has created some of the most beloved and enduring content in history--fans tolerated it.