That never happens. You're talking about a fantasy scenario that only exists in a formula on a piece of paper, not in reality. Salaries will not step match USD erosion, incomes will get mauled as they tend to historically when confronted with inflation, and it'll cause increasing social chaos as the real standard of living drops (out of desperation for bargaining power, unions are likely to get more interest as a consequence).

We’ve been here before in the 70s, and what you predict did not come to pass. It might be different this time, but I doubt it. Prices and salaries will just adjust up to a new normal, and…the only thing that really gets hit are savings.

In my city the locally owned burger places have been paying decent salaries for decades and the people working there seem to not hate the job. The prices are just about McDonalds level and the quality is much better.

Prices are going up at places that see labor as part of their Just In Time system, which turned out to be amazingly fragile in a number of areas.

70-80% of McDs costs are labor, why wouldn’t their prices go up as their labor costs did? How do you have anything in services that isn’t dependent on just in time labor?

McDs stock prices always goes up during economic recessions for good reason. In many places, they are the cheapest game in town. Even in enlightened places like Lausanne Switzerland, only a few kebab places could compete on cost.

You don't need advanced scheduling systems if you've employed the same four people for the last three years. You don't need to develop training and management structure around people who truly do not want to be at work.

If you'll pardon the analogy, McDonalds has been using morale as a dump stat but it turns out to be important lategame.