The last I heard, from a UK financial program discussing DLP a few years ago, was that eurodisney SA don't actually own all of the 7 Disney hotels. From what I remember of the program there was a deal with the French govt before it opened that there would be x number of hotels built and that euroDisney would own & manage 10 of them, but until all x were built that euroDisney would not take ownership of the "Disney" hotels and that they (or a penalty) would be payable to a hotel consortium (presumably the ones in val d'europe etc). They were using this as the reason that DLP was not making money and in their opinion couldn't until all of the planned hotels were built, something that was never likely to happen. As I said this was a few years ago and so the details are sketchy.
I know that since then there has been a couple of bailouts from the parent company but from what the program was saying it was literally impossible (because of the original contract) for DLP to be profitable until all of the hotels were completed.