Lianos is trained in both law and sociology. His current work focuses on competition law and policy, the transformation of capitalism by the digital revolution and financialisation, global value chains, competition law and policy in the digital era, law and political economy, economic sociology and sociology of professions, computational methods and Suptech in competition law and regulation, the regulation of technology, in particular blockchain and AI, digital health regulation, and the intersection of competition law with environmental sustainability, data protection and labour regulation. He has also conducted research on the theory and history of competition law, EU law, in particular EU Internal Market law, public policy (regulatory impact assessments), utilities regulation, IP law, food and agricultural law. Lianos is the co-founder of the Inclusive Competition Forum, a non-profit based in Brussels with the aim to promote pluralism in competition law and policy scholarship and to enable stakeholders from civil society (consumer associations, trade unions, privacy groups, green sustainability groups) to have a more important impact in competition law and policy reforms in Europe (but also the rest of the world).