There is relatively little room for growth in the overall carpet market, which is tied to the size of the population  Most who purchase carpet do so only once or twice, first in their twenties or thirties, and then perhaps again in their fifties or sixties
Thus as the population ages, companies producing carpet will be able to gain market share in the carpet market only through purchasing competitors, and not through more aggressive marketing
The carpet market is unlike most markets in that consumers are becoming increasingly resistant to new patterns and styles.