Do I know how things go in your town? Nope, absolutely not.
Do all repair shops have no parking lot where once a car is dropped off it has to sit on a lift at $1.60/minute until the repair is complete? Also absolutely not. Many shops we used in the past have to order parts and wait a few days for them to come in, so that is part myth, part reality. I'd believe it if something unexpected broke mid repair and the car can't be reassembled/moved without it. But then again, most parts at most chains aren't even available for 60 minute delivery either. Reality is, most parts for most cars are, at BEST, same day delivery or slower.
I may not know your company, or your location. But I went to college late in life, and professional school even later for the terminal degree in my field.
Before that I worked retail, and although the title varied between companies, essentially became what is often called a regional manager. Everything from mall-based, to clothing, to discount "big box" and things in between. One thing that doesn't change much? Internet pressure and modernization.
And I can tell you the same warning signs I saw in work as I watched upper management drive two companies into total liquidation, and one into bankruptcy with a restructuring closing 90% of stores out of 5 businesses...
Those same pressures and indications are present with chains like auto zone and advance auto parts just from visiting their stores and websites. Overbuilt, low foot traffic, and by all appearances, rely upon OTC sales to subsidize basic overhead/operating costs. That subsidy is increasingly getting hurt by the internet, and, you wouldn't be able to jack rates on commercial accounts to fully offset it if/when gone.
Feel free to disagree, it's your right.