Develop a strategic - group map. First, identify characteristics that differentiate fi rms in the industry. Plot the fi rms on a two - variable map. Assign fi rms that fall in about the same space to the same strategic group. Draw circles around each group, making the circles proportional to the size of the group ’ s respective share of the total industry sales revenues. What does this group map tell you about the current state of the industry? What does it reveal about future opportunities?