Since there seems to be some questions and perhaps misunderstanding.
My employer buys literally hundreds of vehicles a year. All of them come off state bid pricing. What that means is the State of Minnesota requests proposals from dealerships to provide vehicles for fleet purchases. The dealer essentially puts together the list of the base price+prices for all the potential options. A common example is a 1/2 ton supercab truck. For Fords, there are 4 dealerships in Minnesota on the State Bid Contract. 2 for Chevrolet, and 1 for Rams. Anyone eligible for State Bid pricing (typically state agencies and local units of government) can buy vehicles for the exact pricing listed in the bid. This pricing is often a good deal lower than retail pricing for a variety of reasons.
That bid is literally only to provide the vehicles.
We also bid out basic oil change and maintenance services on a yearly contract. For us it is cheaper to have basic service done by outside companies on most of our light duty truck and car fleet. Anyone who can meet the terms of the bidding are able to submit a bid. In our case, the bid is to provide oil and filter services for light duty trucks and cars in an 8 county area. We are generally required to select low bids, assuming they meet the terms of of the bidding process - and one of those terms is convenience - ie: one dealer in one place isn't going to be able to bid. Thus we don't go to the Ford dealer (or other manufacturer) for basic oil and lube services. It is not required by the manufacturer that the work has to be done at a dealer, only that it gets done.
To put it another way, as a taxpayer, do you want a state agency getting low bid pricing, or feel better that they spent more than twice as much by going to the dealer? (and it is at least that much different in pricing from the bid price we pay to the retail price for a Quick Lane service).
We do have local dealers handle recall work, and address specific repairs that our mechanics are unable to address.
Have we had any trouble going to Jiffy Lube / Valvoline over the years? Honestly, no. We aren't bringing anything too exotic in. Typically a bunch of F150/F250 trucks with the base V6 or V8. They get a basic oil and filter service, and the air filter is replaced if it is recommended. We give them a PO number, and they take care of the rest. We sign that the service was done, and submit the receipt to fleet.
As easy as it is to swipe at Jiffy Lube and the like, the reality is many dealer Quick Lane services are no better. I had one messed on up on my truck several years ago - and as I told the manager, I was dissapointed that it happened because I specifically brought it there because they should know what they are doing... And a coworker recently had the same experience with a Mazda that the dealer messed up the quick lane oil change service on...
Reality is that any Quick Lane type service at any dealer or a Jiffy Lube etc... is a low paid, entry level service tech in most cases....