Answer:
The statement is true. For firms in perfectly (purely) competitive markets, long‑run economic profits are zero because firms will exit this market if profits are less than that and enter if profits are greater than that.
Explanation:
In economics, perfect competition is a form of market characterized by the impossibility of entrepreneurs to fix the sale price of the goods produced, which is instead set by the meeting of supply and demand, which in turn are an expression of utility and marginal cost. The firm cannot simultaneously determine the quantity and the market equilibrium price.
The definition of perfect competition refers to that situation in which, for the number of economic operators present on the market, each of them (whether it is an expression of demand or consumer and/or whether it is an expression of supply or producer) does not have the possibility to influence in any way, through their behavior, the sale price of the goods and/or services traded on the market.
