Free Entry or Exit e Firms can enter or exit the market without restriction。 o The number of firms in the market adjusts until economic profits are Zero。 8公个个 H arc Inc. items and derived items c ht o 2001 by Harcourt, IncHarcourt, Inc. items and derived items copyright © 2001 by Harcourt, Inc. Free Entry or Exit uFirms can enter or exit the market without restriction. uThe number of firms in the market adjusts until economic profits are zero