Dealerships shoot themselves in the foot all the time. My mom has a BMW X5, and USED to go to the dealership for oil changes. They stripped her oil plug threads, claimed that SHE did it when she brought it back 2 days later because it was dripping oil, and wanted to sell her a new oil pan installed for $2500.
Someone else bought the German car dealerships in Bend, Oregon, Kendall, and she thought she would try them again. NOPE! after bringing in her car for just an oil change, they came out with a list of repairs and upgrades that they wanted her to do that tallied over $4000. The only thing "broken" on her car is the radio head unit. They were pretty aggressive and all but demanded that she approve the repairs but she was able to leave with just the oil change; after an hour of them not giving her back her keys while they tried to up-sell a bunch of service/repairs/upgrades that she didn't need or want.
She later heard that other people were having similar problems at all the dealerships that Kendall bought in Bend, and a man who lives in her town who worked there as a mechanic told her he was quitting, along with a bunch of other people, because of the way the dealership was trying to cheat and rob customers via the service department.
So, because they wanted to maximize profits, maybe to pay for the purchase of the dealerships, they have REDUCED profits because they drove away customers. Not a good business model.