Every car owner wastes time and money at repair shops that tend to be so opaque and corrupt that there are sitcoms about it. Most mechanics employed by these shops get paid much lower than they can charge as an independent mechanic.
Yet, the middlemen who run the shops make many times more than the sum of the cost of labor and parts.
Are you saying that trying to fix this for the 250M+ car owners in America is a problem that doesn't really matter?