The MLCR (corporate chain or franchise) offers some very real benefits for people looking for a meal:
Generally kid-friendly
Held to standards for cleanliness and quality
Menus are accessible and broad—something for everyone in a large group
They’re in that sweet spot of affordable but not so cheap that your “going out” seems tawdry or unimportant
Serve booze, but not in a rowdy bar environment
Atmosphere is safe and predictable—no rough crowds, surly regulars, possibility of winding up in an uncomfortable “in the wrong place” situation
Close to hotels, shopping, movie theaters, other amenities
Acceptable for bland social situations like birthdays, after church meals, celebrating a good report card, etc.
In a lot of towns MLCR are the most readily visible places to eat. And you can assume that they’re decent. There’s a bunch of little taquerias near my house. By how is someone new to town or someone squeamish supposed to know which ones are good and which ones suck? If they drive out to Uncle Julio’s at the mall, they’ll get some serviceable tacos. Sure, they won’t be amazing...but they won’t be gross either. Noodles and Company (fast casual, but still) is not going to be great, but you don’t run the risk of almost accidentally ordering tripe in your pho and grossing yourself out because the menu was poorly translated. (Hi, mom.)
And if you have to travel to boring places for work, MLCRs are a god send. They are priced within tolerance for expense reports. You can pretty readily ID those meals that won’t kill you instantly now that some nutritional info is printed on menus, and the food is at least recognizable vs what’s in the drive through.
When I’m on the road for work, I do all sorts of crazy shit after hours. Driving 45 minutes into the boonies to some crab shack on the side of the road because the Yelp reviews were good. Driving an hour into a totally different city at night because I want noodles. But some folks don’t feel safe doing that. So the TGIFridays in the parking lot of the hotel serves a useful purpose. (Plus you can drink there when you get back from your crab adventure and then stumble back you your room.)