Answer: Can affect the profit of other firms in the market by the choices they make while firms in competitive markets do not affect each other by the choices they make
Step-by-step explanation:
An Oligopolistic Market is one where Competitors are few and the Industry is therefore considered to be CONCENTRATED.
In such Markets, the firms are constantly faced with the decisions such as, whether to implement a new strategy, whether to collude with other firms and the like.
Because there are very few Firms involved, a deviation from policy could affect other firms as the Rational Consumer would respond to said policy which might reduce or increase the Market Share of other firms.
This is in contrast to Competitive markets where there are so many sellers so individual decisions do not really have an effect on the market.