When I was a tech, Mac was the least reliable of all the truck brands. The reason was, at that time (late 90's-early 2000's) Mac called their franchise an "independent distributorship", which was structured somewhat differently from a franchise. My understanding was, the company owns the truck and the route, you own the inventory. You pay Mac a monthly fee for use of the truck and you pay for fuel and tires in addition to payments on inventory, they take care of the rest. The problem is, this is (was?) not a legally recognized form of business in Kentucky. Mac would hire people to be company dealers then start pressuring them to invest their own money into something that legally doesn't exist here. Not surprisingly, the smart ones quit and the dumb ones quickly went belly up.
There was one exception to the rule, a dealer in central Kentucky who actually stayed at it for five years. He sold tons of tools and boxes, had great relationships with his customers, and a wall full of awards from Mac. At one point he was actually beating a well established SO dealer by a considerable margin. With their usual brilliant decision making, Mac decided to put the squeeze on him to buy a distributorship since that had worked so well with all the other dealers. He told Mac to shove it and last I heard his route was still empty. Probably a good thing.