RE: Has or does anyone know if it is possible to move the environment instance from one geo to another?
The country/Region you are looking at for the BC tenant is indicating the localized version of Business Central you are running and will not necessarily correspond with the actual region where data is stored.
As you can see i am running both US and Norwegian localizations in my Business Central enviornment.
But if you click on each environment you can check in what azure region the data is actually stored.
So my US data is stored in the US and my Norwegian data is stored in Norway even though in the case i am running and Azure AD that does not belong to any of those region.
The idea is that the data should be stored as close as possible to the Business region they are used for.