Have you been taking math lessons from Lewislynn? You are assuming that every business is subject to audit from every state? Nonsense. Most businesses are local, and would only b subject to audit by the state they do business in.
That's probably true, but I'm located in Stl and do business in Mo, Il, Ar, and Ky and operate an 'apportioned' truck (54,000 gvw). The paperwork my small (5 employees) business has to put up with is enormous and onerous.