@brahmin,
the market of the competition of the products has three condition:
1.fast cycle market : like the mobile phone products which always changes and come with innovative products with in the short time.
2. slow cycle market is the opposite of slow cycle market , they don't come with innovative products in short time and changes only happen in very long time.
3. stander cycle: changes and innovations is not in short time or long time but stander.
that what i can tell you about it .