Apple doesn't "Get" services - esp. ones where public contribution is more that theirs. Take google maps - it became so good because people like you and me could contribute to it... Apple maps does have report a problem, but then again, it's not as good as google's...plus you must use a apple device. google maps corrections for a business can e sent by a manager today sitting on a, say, Dell PC.
You are right there is no 'report a problem' function, it is called 'report an issue' in Apple Maps....