Are these things not software settings, that are defaulted one-way for certain countries or areas, and another for others?
For example, by default, the 'lock doors when travelling faster than 5mph' feature is disabled on UK cars, but you can go to your dealer and get them to change it.
I would assume (as the cars are basically the same) that if these particular window features are not enabled on US cars that the problem may more be one of the dealers not being
allowed to enable them, rather than it being physically impossible.