I work for a company that makes computers. And thinking about making my own business selling USB cables.

1. My friends think selling USB cables is a commodity and there are many firms that can enter the business. The USB industry is a classic competitive industry and its not possible to earn long run economic profits so I should base my purchase price on the profits that the firm is now making. Do my friends have a point, explain?

2. I rebuttal saying I can probably still earn a positive profit. Explain why I am possible correct?