Audis are notoriously difficult to work on, as were Saab's, and good luck finding somebody certified to service a Porsche in your area that doesn't work at a Porsche dealer.
Not to mention, people that spend that much on a car usually want performance parts or factory parts [not your average "OEM equivalent" parts] and a competent technician that specializes in working with their specific make of car. Why? Because they're uncompromising in the quality of the vehicle they just purchased.
To people like this, they don't care if they have to pay extra for an AAA membership because it's too difficult to jump-start their own car.
Why is it so unreasonable to expect that there are some computer users that hold a similar attitude about their "luxury" computer brand?