In 2009, Ravi Kanbur, Professor of Economics at Cornell University, posited a conceptual framework for distinguishing between four types of economic responses to regulation, as follows:
A. Stay within the ambit of the regulation and comply.
B. Stay within the ambit of the regulation but not comply.
C. Adjust activity to move out of the ambit of the regulation.
D. Outside the ambit of the regulation in the first place, so no need to adjust.