This sounds awfully naive. I have a very small company that sometimes deals with large corporations. Large corporations already want to push a jurisdiction onto you in their contracts. Usually the jurisdiction of where they are headquartered, which makes sense because they have lawyers that are allowed to work at those courts and know how to deal with that specific jurisdiction. So now you want them to be able to choose some big-corp-friendly-private-crypto-court? Sorry, no thank you. In a world where everyone has exactly the same power this scheme might work, but I would hate to have to negotiate with big clients which crypto court to choose.