When I was a kid, our summer vacations were spent at my maternal grandparents' house on the coast of Maine, near Penobscot Bay. Our choices of towns that had real food stores (what would have been called the "supermarkets" of the day, which were probably about a quarter of the size of a modest supermarket today) were Bucksport or Ellsworth. Bucksport was a bit closer, but Maine (at least then) only allowed liquor sales at "state stores," and Bucksport didn't have a state store. Ellsworth did. So the general routine was going to Bucksport for two or three weekly shopping trips, and then a trip to Ellsworth to replenish the grog ration.
Ellsworth also happens to be the gateway off U.S. Route 1 to Acadia National Park, and Acadia happens to be one of my favorite places on the planet so until a few years ago I went there almost every summer. And that allowed me to witness the death of Ellsworth. When I was a kid, Ellsworth had a thriving downtown. Granted, it was only a few blocks in any direction, but it was alive and vibrant. But then the big (or at least "bigger") box stores and small malls came along and they built along Route 1 between downtown and the point where Route 3 to Bar Harbor split off from U.S. Route 1 to points farther east on the coast. Then came the outlet stores. Even L.L Bean opened an outlet store on Route 1/3 outside of Ellsworth. McDonald's is on Route 1/3 outside of Ellsworth, just before the two routes split.
Downtown Ellsworth is a ghost town, a dim memory.
I haven't been back since before my wife died, so maybe 8 or 9 years? I have no idea how that horrible commercial strip is doing, but my guess is that it's probably seeing some decline, even discounting the effects of COVID-19 on tourist traffic.