In the 20th century, probably not, but then again, in the later 20th Century, Western World, you'd have to find a reason why Fritz would marry EC to begin with. The mobster AU author did it by making the Hohenzollern a mobster family, but if Fritz is simply the son of a rich workoholic CEO, his father doesn't have the same kind of life and death power over him, and he could just leave and start his own firm somewhere else once life with Dad became unbearable.