I'm sure they'd think it's worth the investment because Star Wars is one of the best-selling home video movies of all time, and releasing the unaltered versions gives their customers another reason to re-buy the same movies in the same format, and also, from my understanding, it isn't a huge investment really. Remember, we aren't talking about a group of corporate Disney people thinking, "what should we release next?" Star Wars is still managed by Lucasfilm, which is now owned by Disney, and Lucasfilm's goal is to make as much money off of Star Wars as humanly possible, and I highly doubt Disney would tell them, "the OUT will make money, but not enough money so you aren't allowed to release them." I don't think Disney is going to be to interfering with Lucasfilm; they won't tolerate any foolishness sure, but I don't think they'd meddle too much with what they're doing as long as it makes them money.