1. I do not know how well you understand the Hotel business, but last I "looked" Hilton "OWNS" less than 20 properties Worldwide. It is the same for most other chains/groups (in fact there are also several that own NONE). SO I do not understand this insistence that this one is different in that respect. The Corendon thing does add a wrinkle, but more on that later.
2. Curacao is a Dutch/European focused destination, in fact Curacao probably has now less inbound flight capacity that it had 30 years ago, and back then it had less than most other islands. There are many reasons for this that range from Dutch political, how Aruba somewhat broke away, the Curacao government giving more priority to industry and banking than tourism, but which all meant that there simply was not the subsidy paid out to North American airlines, that most other islands shower these airlines with (You ever wonder why Jamaica for example levies so many and such high taxes, well perhaps $50 for each passenger is paid directly from the Jamaican government for airlift).
3. For the all-inclusive market, how can I say this politely...............European and especially Dutch expectations are simply lower. You talk of boredom at the breakfast buffet everyday? That is every all inc in the World, however for these guests, the idea of specialty restaurants has almost always been an upsell or a special "bonus". North American customers will put up with hard to get "reservations" and instead try to do better with specialist upcharges. So while the steakhouse is included, that Tomahawk is an upcharge. Similar to booze. Traditionally the Dutch will take any any well drink, and not want to pay an extra cent for anything, and will accept solid brands, but not high end brands, while US patrons will actually shell out extra for the Kettle One, or whatever (I do not agree, just stating how it works).
4. Dutch people do NOT go to Caribbean all inc places for 5 days or a week, they go for 2-3 weeks on average. They expect to pay one CHEAP all inclusive price (Corendon also operates its own charter airline and flies all over the Med Basin) Corendon traditionally is the biggest booker of these such trips for Dutch people and they grow form going to Morocco, to Turkey, to Tunisia, to Curacao and then Aruba. They have essentially set the expectations for these people, and for them, this Curacao property looks "good", for most North Americans, it is just ok maybe. As Curacao is a Dutch island (their version of commonwealth or whatever) they can do that on Curacao. On other islands there is far more competition, and their hotels could probably survive, but would not be very highly rated.