Outside In: challenges for evolutionary studies on entry

This short note reviews the evolutionary modeling literature focusing on the specific topic of entry of new firms. A large variety of choices have been employed to model entry, often motivated by the need to keep the model simple and comprehensible. Entry is more subject to simplification pressures than other elements of industrial dynamics because a deeper treatment of the phenomenon requires the specification of details external to the focal industry. Starting from more recent and elaborate models of entry, some proposals for further advancement are put forth.