In discussions of barriers to entry, what is meant by the term "virtuous cycle"?
◦
A virtuous cycle refers to successful research and development that leads to information that is used to develop other new products.
◦
A virtuous cycle refers to the situation where the pursuit of self-interest in establishing an entry barrier leads to an increase in social welfare (the "invisible hand").
◦
A virtuous cycle refers to a situation where if a firm can attract enough customers initially, it can attract additional customers because its product's value has been increased by other customers using it, which attracts even more customers.
◦
A virtuous cycle refers to a firm using the profits from a monopoly in one market to establish a monopoly in another market.
The life cycle of HIV
Complete Menstrual Cycle
The cell cycle.
Elongation cycle.
Mucus and Cilia: Physical Barriers
Major cell cycle checkpoints