For commercial law there is the obvious test of whether the law leads to prosperity. Can we have a utopia in which our favourite artists, well funded by copyri

For commercial law there is the obvious test of whether the law leads to prosperity. Can we have a utopia in which our favourite artists, well funded by copyright royalties, are free of the tyranny of the day-job and may create full time, unfettered by copyrights on existings works that they wish to improve, rework, remix, play-off and a dapt? Probably not, but the problem we face is clear enough: construct a system of commercial law around the trade-offs that lead to artist abundance. There is an Economics and Law movement, partly inspired by Coase's Theorem, http://www.daviddfriedman.com/Libertarian/The_Swedes.html http://www.daviddfriedman.com/Libertarian/The_Swedes.html, that has high hopes of economic efficiency as a basis for discerning between good and bad law.