A more general concern is that laws can never be fixed in perpetuity. As societies and economies evolve, the details of the law, though generally not its fundamental principles, need to change. But any uncertainty about the clarity and fixity of the law adds to the risk of trade, which as I noted, is reflected in a higher real cost of capital.
We in the United States endeavored to lessen legal uncertainty by embedding our most fundamental principles in a constitution, which we made difficult to amend. The commercially and economically salient specifics are typically expressed in federal or state statutes.