A lot of people meal prep for the entire week. Restaurants could fill in for that.
Something like https://www.eatclub.com/ but for home, and delivered in bulk.
In frugal times, going to a sit-down restaurant is insanely expensive compared to a good at-home meal. A typical sit-down restaurant is like $60 per person including tip/tax with an appetizer and drink. For that, I can eat all 20 meals for a week if I shop sales.
The first link I found on Google [https://minnesota.cbslocal.com/2019/05/16/survey-shows-how-o...] says that almost half of Americans basically never dine out or do take out. Only 10% eat out in any form 4-6 times a week. So there's definitely space for something in between for the home consumer.
Where do you live? We typically pay $30-$40 for a particularly nice night out at our favorite restaurant. Cheaper stuff runs more in the $10-$25 range. And we're in Boston!