My thanks also go to all my fellow PhD students from the Chair of Product-Market Relations, especially to Eveline and Samuel, for great days and long evenings at the PhD Days. Also, my thanks go to all the managers and top managers who have supported my research activities from di erent roles, be it as sparring partners, part of the sample group or as personal con dants.Finally, I would like to thank three people personally from the bottom of my heart. Very dear thanks to my father, who passed away much too early. During the time we spent together in my childhood and youth, it was you who gave me the attitude and values that now, many years later, are the guarantor for me to complete this research journey. Very many thanks to my wife and our son. Ele and Lenny, I will always appreciate your in nite patience in putting up with me in all my personal facets during this PhD.