Demanding that parts makers reduce costs without providing any support in increasing productivity would just be forcing them to bear an additional burden. This is not the way Japanese manufacturers increase the value of products. Increasing the value of products is important in non-manufacturing industries too.
For example, I was informed by a retailer that, with a slight change of focus in its sales strategy, it came up with the idea of selling goods that were easy for the elderly to use and that these became big sellers.