You are largely wrong on the motor industry. Parts is one issue -- though there are plenty of non-Ford parts available for Fords (for example) even body panels.
But consumable items such as filters, oil, hydraulic fluid, screen clean, coolant, brake discs and shoes, shock absorbers, exhausts, windscreen wipers, bulbs, tyres, (not to mention petrol and diesel) are pretty much generic for all but the most exclusive brands of car.
You need to pass back to your client that people are getting wise to the price of ink. Things need to change or the technology will disappear like dot matrix and daisywheel.