Digital Ecology: Coexistence and Domination among Interacting Networks
Kaj-Kolja Kleineberg, Mari\'an Bogu\~n\'a

TL;DR
This paper develops an ecological model of digital networks, explaining how multiple online services coexist or dominate by competing for users' limited attention, revealing insights into social network dynamics.
Contribution
It introduces a novel ecological framework for understanding the coexistence and dominance of digital networks, contrasting with traditional competitive exclusion principles.
Findings
Multiple networks can stably coexist or one can dominate.
Most outcomes involve a moderate number of coexisting services.
Model predictions align with empirical observations.
Abstract
The overwhelming success of the web 2.0, with online social networks as key actors, has induced a paradigm shift in the nature of human interactions. The user-driven character of these services for the first time has allowed researchers to quantify large-scale social patterns. However, the mechanisms that determine the fate of networks at a system level are still poorly understood. For instance, the simultaneous existence of numerous digital services naturally raises the question under which conditions these services can coexist. In analogy to population dynamics, the digital world is forming a complex ecosystem of interacting networks whose fitnesses depend on their ability to attract and maintain users' attention, which constitutes a limited resource. In this paper, we introduce an ecological theory of the digital world which exhibits a stable coexistence of several networks as well…
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