I think they throw away a lot of potential profit, just in excess wire. Wire is not cheap. Just look at all the wire I had to support and was just laying on the underbelly of my rig. There is more than $30 of waste here.
Consider how well managed, wiring is in cars and heavy equipment. They aren't just throwing excess bundles of wire behind in their products. This is a design and process concern, that could easily be tightened up. I have yet to see evidence of improving line efficiency, with this being low hanging fruit in the build process. Giving the people on the line 40' of wiring, when they only need 30', as well as no place to hang the excess wiring, nets these results. Now consider their choice in component choices and their need to buy at scale.
Something is wrong in the Elkhart labor force and it needs new blood in my opinion. They are all trading the same group of people and the number of years they may have in the industry, does not reflect an improvement across ALL brands, from what I have observed in 3 years.