Since it's MS Paint time.
Someone parks at the red arrow. It's neither the first spot upon entering the lot, and it's not anywhere near the entrance or where the cars parking close to the entrance is.
Someone that parks there on purpose is doing so not because there's an unwritten rule for parking that all should follow, they're doing so because there's an "unwritten rule" or more a social norm of personal space and general human behaviour (i.e. parking close to where you want to go, or parking the quickest) they're trying to anticipate and act contrary to to achieve their goal of not parking next to someone to reduce the chances of expensive damage by disrespectful jerks (of which there are clearly sufficient numbers to make this a reasonable desire). EDIT: They're not expecting others to alter their behaviour for their own goals, they're trying to anticipate others NOT altering their behaviour.
So someone pulls into that lot, what possible motivation could they have for parking next to the red arrow guy other than trying to evoke a response? If they're motivated by parking at the first available spot, that's not it. If they're motivated to minimize walking distance, that's not it either. If it's just a random spot, there are hundreds of other random spots so it's extremely unlikely to be next to the red arrow guy (that's what randomness means). So what other motivations are there that would result in parking next to the red arrow guy?
I think the answer is the simplest one. A great many people have an extremely difficult time being nice to other people. Even this thread demonstrates that with a high degree of certainty.