You know, a year ago I would have said you were crazy.
Driving around town and looking at the logos of almost every bank, and half the businesses on a street you can see the symbols once you know what to look for. Triangles, pyramids, sun circles everywhere. The inverted "V" with some kind of off-color splash to try and make it an A is especially popular.
It's waaay past the point of "design coincidence."