I was actually suggesting they were protecting the neighbors from a potential highly sophisticated criminal mastermind casing the joint to conduct an Ocean's 11 style vault heist of the property next door by drilling through the wall, but I didn't know how to communicate that ;)

I agree. Rich folks don't go to McDonalds too often. However in Europe the brand is perceived a bit differently

The US middle to upper class generally seems to look down at McDonalds as being a place where the poor, fat, or simply lazy go to eat. That's just not the case in other countries.

I can only speak for Paris and Tokyo, and the very upper class may not eat there, but nobody else has a problem with it. It's not just American tourists keeping them in business.