Along the lines of this thread, since OP used Taco Bell.
There once was a place called
Naugles in Southern California. It grew big and was very popular in the late 1970s up until about 1990. Naugles was a fast-food Mexican restaurant, just like Taco Bell and Del Taco.
1980s kids such as myself grew up on Naugles. But in the early 90s, Del Taco bought them out and all Naugles restaurants closed.
Mid-2000s and one of those 1980s kids was doing some research. He discovered that Del Taco had never utilized the Naugles logo and branding. Under US law, that meant that Del Taco had 'abandoned' the brand.
So, he claimed it. And Del Taco fought him and lost.
There are now three Naugles restaurants in Southern California. Serving up the same fare with the help from former employees and family members of the original family that started Naugles back in the 1970s.
But the decor is updated, and while the new branding is not much different than the old branding it too is fresh and updated while leaning on the nostalgic/classic feel of old Naugles.
And yet, about ten years later there are
still only three restaurants.
My point is that nostalgia (not changing) is great, but you can't live there.