Michael Weiss is a columnist for Foreign Policy, The Daily Beast, and NOW Lebanon. He is also a fellow at the Institute of Modern Russia where he is the editor-in-chief of The Interpreter, an online news and translation journal covering Russian foreign policy and the ongoing war in Ukraine.
Perfectly competitive firms are small in size in relation to the market size â and none of these firms control the market. A monopolist firm, on the other hand, is larger and controls the entire market for its industry. Monopolistic firms are price makers by virtue of their market control.
The demand curves for competitive firms, however, are almost perfectly elastic because no matter how these firms change their production, in a perfectly competitive economy, there are so many firms out there that its production will not affect anything.onopolistic competition, because there are so many relatively weak firms, there are no barriers to entry. Companies can enter the market relatively easily (although, of course, not as perfectly easy as in perfect competition). This makes for a long-term equilibrium competition of no profit.