When I was a young mechanic, the dealership I worked for sold a leading Japanese motorcycle brand. The motorcycles/snowmobiles were very good but every so often they would have an oops moment and rather than address the problem they would just improve the product and forget about the customers that bought the product with a problem.
Later in life I sold the leading forklift brand in the world and the product was very good if not the best, it is Japanese. I sold a particular model to a lot of lumber yards and about 5 years later there was a problem, design flaw, in the hydraulic lift cylinders that could cause severe damage to the entire hydraulic system. There was never a recall and they would only partial pay if the customer made a big enough deal about the failure. Out of warranty was their response. I had several users of this particular model and made it known to the manufacturers service representative that if there was a denial to my customer that I would go to the states attorny general and have them start an investigation. Again the problem was addressed in future designs but the old problem was ignored.