Myriad reasons, WWII behaviour, the late owner Johanna Quandt’s hard face attitude to various things like having her daughter kidnapped, then there are the destroyed (solvent) firms they trod on Glas and Borgward and the appalling job they did over Rover plus Bernhardt Piestrider being an idiot and then less obvious reasons such as the cars they make being pretentious, the owners arrogant and pushy plus just simple irrational hatred...