Article by Aline Blankertz & Svea Windwehr: “Governments, businesses and civil society representatives, among others, call for “alternatives” to compete with and possibly replace big tech platforms. These alternatives are usually characterized by different governance approaches like being not-for-profit, open, free, decentralized and/or community-based. We find that strengthening alternative governance models needs to account for the dynamic effects of operating in a digital ecosystem shaped by ad-driven platforms. Specifically, we explore in this article: 1) how interoperability between the microblogging platforms Threads (by Meta) and Mastodon (a not-for-profit service running on a federated open-source protocol) may foster competition, but also create a risk of converging governance in terms of e.g. content moderation and privacy practices; 2) how openness of the online encyclopedia Wikipedia allows Google Search to appropriate most of the value created by their vertical interaction and how the Wikimedia Foundation seeks to reduce that imbalance; 3) which types of interventions might be suitable to support alternatives without forcing them to emulate big tech governance, including asymmetric interoperability, digital taxes and regulatory restraints on commercial platforms…(More)”.