The article is an attempt to determine the constitutionally permissible limit of the participation of SOEs in the economy in light of Art. 20 of the Constitution. It begins with an introduction, summarizing current research in economic and legal sciences on the issue of the growing participation of SOEs in the economy and discussing the legal problems that this phenomenon raises. This is followed by a discussion of the relationship of the state to state and private property in light of the social market economy model. The considerations are supported by references to the doctrine of ordoliberalism and the jurisprudence of the Constitutional Court. Possible measures for determining the excessive participation of state-owned companies in the economy in light of Article 20 of the Constitution are then considered. The article is concluded with conclusions for public administration bodies and the doctrine of public law.