I've always felt that the Falcon Wing Doors made the Model X an albatross from day one. They added a lot of expense to the vehicle, while limiting it's usefulness. The Model X was supposed to be an SUV. SUVs were, and are, the best selling vehicle segment. A lot of the Model X's features actually could have made it a high volume vehicle, but that never happened because of the added expense of the Falcon Wing Doors. Those doors also seriously limited the X's functionality in a very important aspect. What is a common denominator for most all SUVs that the Model X lacks? Roof Racks....
Sport Utility Vehicles are used to haul their owners' toys that can't fit inside, like canoes, kayaks, surfboards, small sailboats, bicycles, rafts, etc. Roof racks are used for other necessary items like lumber, and other hardware, mattresses, sofas, chairs, etc. That's why practically nobody is buying an expensive Model X, it's supposed to be an SUV, but it seriously lacks Utility.