Einleitung -- Existenzbedrohung: Dämonen überall und gleichzeitig -- Forecast: Totalschaden möglich -- Geschäftsmodellinnovation: Partizipativ und diskursiv -- Geschäftsmodellebenen: Erfolgsrelevant und konsistent -- Perspektiven.

In this paper, we provide a very simple model to shed light on the issue of managed competition in mixed quasi-markets (i.e. regulated markets in which social and for-proÖt Örms coexist). In doing this, we consider the literature on mixed oligopolies as a reasonable reference point and try to...

Applications such as iMessage, KakaoTalk, LINE, Signal, Skype, Snapchat, Threema, Viber, WhatsApp and WeChat have become an increasingly popular means of personal and business interaction. Surprisingly little academic effort has gone into understanding the nature and origin of these...