Could you expand on the definition of "doing business with" an entity that you're using here? It seems quite non-standard.
If you open the door to a govt office, are you doing business with the company who installed the doors? If you use the toilet, are you doing business with the company that janitorial services are contracted out to?
If you open the door to a govt office, are you doing business with the company who installed the doors? If you use the toilet, are you doing business with the company that janitorial services are contracted out to?