Again, as Henry stated, it is valuables.
Canon law, your soul is at stake. Business law, money is.
Gaming law ... meh. I roll up a new character/change groups/begin DMing.
Also, even in multi-million (billion?) dollar gaming industries (football, anyone) there isn't a body of interpretive law. You have refs, and an overarching league with the mandate to make decisions. Eventually some business cases might make it to court, but despite all the money at stake there isn't a school of football law.
Despite looking a lot alike, terms "rules lawyer" and "gaming law," are utterly removed from one another. IMO, we'll have a league of "RPG authority X" long, long, long, long before we have "Duckbert, RPG Attorney at Law."