Actually, a client does have 'skin' in the game, if an accident takes place if they "hired" the drone pilot, and not only does the pilot not have a 107, but not have liability insurance, the injured party will certainly name the client in a lawsuit. Convince the clients it will "cost" them and we will soon see more of them using legitimate 107 pilotsIn regards to Part 107 pilots providing commercial services to clients, the Part 107 license is meaningless without 1) enforcement and corresponding penalties and 2) making the client complicit in the offense. The offending clients have no skin in the game in regards to regulations and therefore have no incentive for seeking out licensed Part 107 pilots since they have no threat of penalty. I realize it's easier said than done but unless and until prospective clients face penalties, unlicensed shade tree pilots will always pose a threat to the livelihood of those pilots who took it upon themselves to pony-up $150, take the written exam, and play by the rules.