That includes things like failed restaurants that didn't make money and closed as well as fast food restaurants that operate on margins impossible for other restaurants and essentially act as real estate companies.
If you want to run a restaurant and not join the tens of thousands that close each year you can't run them the way you're saying. Doing $2000 in business and making $40 isn't sustainable. Successful restaurants don't run that way.
https://www.forbes.com/sites/sageworks/2018/01/26/restaurant...
Australia cites 4.2% https://treasury.gov.au/sites/default/files/2019-03/360985-R...
etc.