I see that some (or all?) Android devices that support Galileo global positioning system are deliberately programmed to self-disable their Galileo support when used in USA or US territories.
This applies to Sony Xperia XZ Premium, for one example, whose hardware supports GPS, GLONASS, BDS and Galileo. According to the official response, it is not a matter of region-specific firmware, but rather a purposely programmed real-time behavior: any XZ Premium device, regardless of its region of origin, will see Galileo satellites outside of USA, but inside USA it will deliberately pretend that they don't exist.
What is the reason for this behavior?
Is this some sort of company-specific patent or legal issue?
Or is it some kind of US or European regulation?