Are Social Media Platforms a Threat to Democracy? An Ecosystem Governance Perspective

Abstract Castello, Colleoni, Scherer, and Trittin contend that social media platforms threaten democratic processes by facilitating the spread of misinformation and fostering polarized debates – dynamics that ultimately serve to monetize user attention. We acknowledge the problem but challenge their proposed solution of conceptualizing social media as political spaces. Instead, drawing on ecosystem theory, we propose an ‘ecosystem failure’ analysis as a more robust analytical framework. Within this perspective, we see these information‐related problems as negative externalities that weaken the entire platform ecosystem. These externalities are structurally distinct due to algorithmic curation that selectively amplifies content in ways that reinforce user biases, strong network effects with almost zero replication costs, and engagement‐based monetization that decouples production from editorial standards. We therefore advance a reflexive ecosystem governance approach that accounts for broader ecosystem value, shifting the focus beyond short‐term economic performance to encompass overall ecosystem health. This approach transforms the management of negative externalities into a core strategic interest for the platform and aligns the incentives of individual actors ex ante, by design, prioritizing risk‐adjusted reach and demotion of low‐integrity content over ex post moderation. We analyse the mechanisms that align private incentives with democratic resilience and highlight the inherent trade‐offs involved.