I’ve heard a claim going around that McDonald’s cheese is formulated to have a distinctive flavor so people will crave McDonald’s cheese specifically. I don’t have any source, so I’d say that’s more of an urban legend than an established fact, but you can find articles like this one that give less sinister sounding reasons for why their cheese has such a distinctive flavor:

https://www.marketingscoop.com/consumer/what-kind-of-cheese-does-mcdonalds-use/