What makes blockchain so special is not its technological capabilities, but rather the people who build these decentralized systems. The community is founded on open-source code, this means anyone can build upon it and upgrade the system with consensus from the network. They can even “fork” existing code bases and build their own private systems. However, having a private blockchain goes against the fundamentals of which it was built on. A much more practical approach is building an open-source chain like the Cardano team has done.