I also ask what rules should be in place, because bitcoin is in my opinion a system that anyone can access
Yes I agree with you. Bitcoin is accessible by anyone that's I think bitcoins should have rules and regulations to maintain the bitcoin orderly. The should also think that the rules and regulations is not to control but it is fot improvement.
Good thing to know that bitcoin has a bigger opportunity for improvement, because it is cryptocurrency currency and driven computer network, you can put some security features to enhance security level of the technology.