She is not permitted to make a profit from her work.
Kate is not allowed to profit from any of the job she undertakes, which some may find weird in today’s environment. Kate is an accomplished photographer who has shared professional photographs she has taken over the years.
In normal conditions, she would be able to monetize her photographs by licensing them. However, as a member of the Royal Family, her work is distributed to the general public through the Palace, and she does not profit directly.