You may be right for the majority of people. But many particularly those who have spent a grand on a used imported car would want the best people to take care of their ride.
I am certain that people in upper class locations such as Defense and Clifton will be willing to pay a premium for their cars to be maintained by expert educated mechanics.
The costly services of a 'real' expert in my opinion will save money. We tend to pay 3.5k to inexperienced mechanics who wreck our cars creating lacs in losses. I am sick of these roadside mechanics who are neem hakims.
Personally I won't mind spending 10k or even 15k just for annual tuning of my car by a certified and educated professional.