If we put outselves in FAA's shoes, if they're too un-restrictive against drones now they run the risk of letting the situation get out of control in the future

If we put outselves in FAA's shoes, if they're too un-restrictive against drones now they run the risk of letting the situation get out of control in the future. As a thought exercise, how would the recommendations be enforced? Once drones are accepted as common transportation agents, how do you identify the one skipping the recommendations and, more importantly, who is flying it?