That's 12 blu-rays a year. Do your kids really watch THAT much Disney? You could buy every new Disney movie each year and have extra slots to fill out the backlog for that price, plus de-facto ownership of the data.
The size of Disney's catalogue may be underestimated by some. Having instant access to all their movies[1] and television shows[2] has quite a bit of value, and would consist of hundreds upon hundreds of blu-rays. I am not one who would sign up, but certainly if I had children I would much rather have streaming access to all of this than stacks of discs.
I am assuming a catalog "filled" with live action Disney films would mostly have those one-off concept movies they created for their channel than pages upon pages of movies standing peer to Pirates of the Carribean.
Still interesting enough to kids but let's not pretend like it's not padding; those movies were often very formulaic, "relatable kid with a weird life or circumstances goes on a journey" - not really worth the price tag for a subscription.
I would never want to own the physical discs (minimalism), but if the price is right this will still be better than buying the individual movies on Vudu for some people.
Im guessing you don’t have kids? Disney Jr, Disney Channel, and Disney XD put out more content than you could possibly imagine - some of it very good, and most of the rest at least tolerable.
Disney movies are a very small portion of their catalog, although to someone in a household without kids I can see how it would appear that marvel and Star Wars were all Disney did.
Kids handling Blu-Ray disk and constantly swapping them out would easily triple the blu-ray disk cost and also probably add on the cost of atleast one new blu-ray player a year.