A classic example of tiny commercial operations (the airport and the fixed-wing passenger operators) attempting to disadvantage a lot larger number of GA pilots, glider pilots etc in the name of "development" and "safety".
Do you think Tesco would get away with taking over the local playground or a big chunk of green belt countryside by claiming that it would benefit their profits?
Norwich Airport clearly think that their claim is somehow special because the "playground" is just open airspace.
Objection has been sent.
P.S. Similar support will be required when "London Oxford Airport" AKA Kidlington starts the same game.