What does industry dynamics examine?

The industry dynamics looks at the future industry structure and future shape of 5-forces, whereas the regular Porters Five-Forces model only look at the present  tells very little of the future. 5-Forces are a “snapshot” of the present, and what it does tell of the future may be unreliable. Industries change. Consider how the 5-Forces will look in the future. Also stage in the the product and industry life cycle. The industry dynamics are best viewed when looking at the product / industry lifecycle