"the main man who fixes motors on the island and offers quality repairs makes the prices sky high and has a slow turnaround. Plus, he says the fishing community is interested in different motors, but has no one to repair them because they only work on Yamahas"
I should let this go but:
The main man is a wonderful guy who has fixed my friends motors for 25 years at very cheap to reasonable prices, including Suzuki, Honda, Evinrude. The turn around time isn't just slow, it is really slow. but exceptions have been made. I wouldn't come in all excited to get one of those exceptions unless you are related, however, so some folks can be a bit disappointed in his shop. His little concealed policy of "Labor rate based on customer attitude." does not endear him to all fishermen.
The simple fact is, he is a popular, influential,wise,and successful guy who runs his repair business at his pleasure. He doesn't care about competition because a sizeable part the the motor owning public will bring motors to him as long as he is willing to fix them for us.