"Wohlfahrtsanalyse" . . "Digitale Güter" . . "Theorie" . . "Online-Marketing" . . . . . "Platform Siphoning: Ad-Avoidance and Media Content" . . . . . . . . . . . "Platform Siphoning" . . "Platform siphoning : ad-avoidance and media content" . . . . "Internet" . . . . "Abonnement" . .