As far as this thread goes, rednukleus did specifically say "high margin places". But yeah, it's just an often-overlooked angle on a (still) hard problem.

I'm not sure about your example of the local dealer. The "local" part implies to me that personal relationships and long memories will play a relatively large role in someone's business. It could be extremely beneficial to at least be seen as looking out for others to your detriment, and it would probably be easier to do for real than to fake convincingly for a long period unless your customers are ignorant.