What is the reason for the long run equilibrium of a firm in monopolistic competition to be associated with zero profit ?

What is the reason for the long run equilibrium of a firm in monopolis

1.	What is the reason for the long run equilibrium of a firm in monopolistic competition to be associated with zero profit ?
Answer» SOLUTION :The reason why firm in monopolistic competition EARNS zero profit in the long run is free ENTRY and exit of firms. If firm earns super normal profits in the short run then new firms will ENTER in the long run and if there ae losses then firm will exit in the long run. The RESULT is zero abnormal profits in the long run.