No business lasts forever, at least not in the same form that business started with. I recall a very popular family restaurant in Michigan, during The Lyndon Baines Johnson administration. It was called Red Barn. Similar to places like Big Boy or Roy Rodgers restaurant.
All of a “sudden”, the Red Barns started closing. Perhaps they were bought out, then phased out.
From that period, The White Castle remains one of the last of the Mohiccans.
I grew up near Red Barn in St Clair Shores
And Howard Johnson.
Cracker Barrel will survive. They have great breakfasts and prices good.
I do like their chicken too.