Assess students' ability to construct a formal game-theoretic model (players, strategies, timing, payoffs) for incumbents and entrants in multi-sided digital platform ecosystems featuring network effects and multi-homing; derive Nash/Subgame-perfect equilibria for pricing and access, specify implementable data-sharing and privacy-compliant policies under regulation, design entry-deterrence tactics and dynamic innovation-investment strategies consistent with antitrust constraints, and provide comparative statics and welfare/regulatory implications for chosen parameterizations.