Tge street-level character of a city isn't magically preserved because the acquiring company chose to retain the name. Example: I live near a sushi restaurant that has changed hands six times in my life. Two times they kept the name. One time they kept the facade. Never did they keep the employees. Maybe a token "manager" but the character of the place always shifts.
I like the metaphor because it really does ask the question "how much must one replace to make something indistinguishable from its progenitor?"