How can industry life cycle influence concentration?

The industry lifecycle can also influence concentration based on where in the lifecycle the industry is: 1. Introduction - High investment required in R&D, high price/low volume, low seller concentration 2. Growth - Market expands, economies of scale (cost saving, falling prices), new entrants due to profit, seller concentration still low, low prices to increase demand. 3. Maturity - No more demand growth through price-cut, heavier advertisement required (increasing entry barriers), seller concentration increases. 4. Decline - Sales and profit decline, firms leave (voluntarily or not), collusion and mergers, for surviving firms seller concentration is high