Please help need clear work thank you.

How do economists interested in strategy think about industry today?

We can go further than challenging the idea that industry profit differences reflect firm rather than industry factors. We can challenge the whole idea that the traditional concept of an industry is really a good way to think about firm positioning and profitability. Recent strategy scholars have moved away from the noncooperative game theory used widely by IO and taken up coalitional game theory ideas. In coalitional game theory