Answer: The answer is given below
Step-by-step explanation:
The entry of a new firm will lead to the reduction in the demand for the existing firm, thereby reducing the output and price. Also, in the long run when the new firm enters the market, this will lead to the supernormal profits to be driven down. The firms are price makers, faced with a demand curve that is downward sloping. Because each firm makes a product that is unique, it can either charge a lower or higher price than its rivals.
As the new firms enter the market, the demand for the product of the existing firm becomes more elastic, the demand curve will shift to the left, which drives down the price. All the super-normal profits will be gone. So, change in the elasticity effects profits .
For the market shares constant innovation to be defended, proper marketing is required. The monopolistic competition is based only on product differentiation . When new variety and innovative products are launched, this may attract consumers which will lead to increase in demand and drive up the profits.