It seems to be common , like Adidas and Puma. The Quandt family that owns BMW maintains a low profile and rarely intervenes while the Porsche-Piëch family had

It seems to be common , like Adidas and Puma. The Quandt family that owns BMW maintains a low profile and rarely intervenes while the Porsche-Piëch family had all sorts feuds resulting the disastrous takeover attempt by Porsche of VW.