Really that's strange. Usually in times of economy problems, businesses targeted on middle class layer suffer, since middle class is vanishing turning into lower class who is a main customers of corporations like McDonad's. So, theoretically, that corporations should even get higher profits.

IDK, if only such corporations is really making money from endlessly taking larger and larger loans in banks securing them with growing customer base and assets and/or from stock trading and not from the serving customers keeping zero profits to evade taxes. Then, problems with banks/stocks ruins their scheme, so...