Well lets cut the work force in half. Only the most educated need apply. Yes many of us out of a job. Me keeping my job is never an excuse for allowing abuse of the system. You say it is not your problem to worry about if they pay. Remember those days your overworked exhausted. If you denied transport to people that do not need an ambulance, number 1 you would have more time available to catch your breath. #2 if your service still stayed busy only transporting real emergencys which are easier to get funding from your service could afford more people and trucks again keeping you from exhaustion. Also taxes end up paying most of our checks so you are paying higher taxes when you transport BS that does not qualify for reimbursement.
Do you want an easy way to know if insurance, medicaid, medicare will pay? Probably not but here it is anyway. If the patient could reasonably have gone by any other means your service will not be paid unless you commit fraud in how you write the report, not having access to another means of transport is not an acceptable reason for ambulance transport. To simplify it further will they die or become permanently worse if not taken by ambulance? Easily 90% if all paper work is done truthfully would be disqualified.
Now I do agee though this will not happen wide scale because as you say there are way to many "meatheads" in our profession.