At least in the US almost everything follows "right of first sale" doctrine. Otherwise I'd have a claim against a car dealership when I trade in my used vehicle

At least in the US almost everything follows "right of first sale" doctrine. Otherwise I'd have a claim against a car dealership when I trade in my used vehicle. The only thing I can think of that don't follow this is real estate. Racial covenants were functionally invalidated by the federal government a while back. But you can attach almost any other restriction to property you want. For example, you can include a no-commercialization clause when selling property.