Well.......actually the way it happened for electricians was that there were a bunch of Sparky Yahoo's running around and doing slipshod work. Fires started and people were injured and killed. So the State govt stepped in and wrote standards and required licensing. Local Govt saw that there was money to be made with permits, inspections, and licensing, the rest is HISTORY. Now because flooring doesn't KILL anyone or make them get sick (plumbers) we probably will not see Govt. intervention (unless there is BIG money to be made). The only looser with a lousy install is Joe consumer and the govt doesn't care about him unless it means big bucks for them. This is of course the simplified version.