By 'casual dining' we mean the sort of dining which is more upmarket than going to McDonald's but less glamorous than booking a table at a restaurant inside the Hilton, or one which has Michelin stars. The casual dining industry has taken a severe hit in recent years, with well-known brands like Ruby Tuesday and Applebee's forced to cut costs wherever they can. Regrettably, that's included the closure of stores, and the loss of jobs.
Apparently, the trend among millennials is to either eat at home, or order a takeaway. When they do go out, they'll either hit a fast food restaurant or spend their money on a classier establishment, cutting out all of the venues which occupy the middle ground. You'd have thought that cooking at home and eating healthily would be viewed as a positive trait, but apparently, that's not the case.