He notes that there are certain areas, such as the environment, where activities which cause damage to third parties (known to economists as "negative externalities") cannot effectively be regulated solely by the marketplace:

Rejecting the industry's view that it should be regulated solely by antitrust principles, the court said the F.C.C. rules were a justified deterrent to "monopolistic domination in the broadcasting field."

In the field of securities regulation, Canada is unique in having it being solely regulated by the provincial and territorial governments.

Bank secrecy was regulated solely by civil law, enabling clients to lodge complaints for damages against any bank that didn't maintain confidentiality.

In the exercise of this power, they were regulated solely by their own views of duty, and were not responsible to any other power in the state.

Incoming air flow is regulated solely by varying the opening of the intake valves.

In the former, Borg give philosophical arguments to demonstrate how and why the essence of matrimony should be solely regulated by the Catholic Church.

It is a closed institution and is regulated solely by the Council.

Such practices should continue to be regulated solely by this directive.

Until now, air transport between EU Member States and Canada has been regulated solely by bilateral agreements.