Oh yeah, I get what you mean but I would be absolutely amazed if Merlin handed a contract to Aramark that said the equivalent of "charge what you want, we don't care how high it goes". There'll almost certainly be caveats in there that allow and require involvement from them.
It's Alton's name on the door at the end of the day and the staff are dressed no differently than directly employee staff - the public perception as a result is they're all exactly the same company. There's no "F+B Guest Services" so it's Alton who (rightly) should take the flack if people are finding pricing and/or food quality hard to stomach. To be completely hands off from things such as pricing as a result would be almost impossible in my view.
Edit: Also 100% agree
@BarryZola, I'm actively eating less on resort these days. Eating something off resort before arriving on a Friday for a weekend, we just hung fire for some food on the way back yesterday instead of having something before leaving. More profit but far fewer customers in the long term means fewer outlets and an ever more dwindling amount of choice at the resort. The whole plan a while back appeared to be better options = higher guest spend, but instead we're getting the same or lower quality but considerably higher prices resulting in people just not bothering.