You may well be right Rob, but the purchaser of a new Audi is not generally that bothered about what happens when the car gets older. In my case I buy a new A3 and do around 12,000 miles a year sell it at around 3 years. I pay for only one service during that time. The car is serviced by the same dealer that sold me the car are they are more than happy to give what I consider a good trade-in price against the next new one.
Not having control over what happens for the first few years of a cars life is one of the disadvantages of buying second-hand.