In a competitive market, profits are likely to be lower than a market with only a few large firms. This is because each firm in a competitive market has a very small market share. Therefore, their market power is very small. If the firms make a profit, new firms will enter market, due to low barriers to entry, because the market seems profitable. The new firms will increase supply in the market, which lowers the average price. This means that the existing firms' profits will be competed away