You'll find the solution here. By Kayte VanScoy, Smart Business March 2001 E-commerce liquidity has more to do with the offline industry than you would think. Just ask a pig. The most important predictor of e-commerce liquidity, however, has less to do with a Web site's business model than it does with the offline industry it serves.
Different industries have different cost structures.
The paper industry is so dominated by big players like Georgia-Pacific and International Paper, Kirk says, that the big boys are able to force smaller players to move online. The ultimate consuming marketplace is well defined and actually getting smaller, so I really don't see the Internet as a vehicle for expanding markets. It's really just an efficiency mechanism. Still, large corporations will continue to drive the spread of e-commerce. Take, for instance, the lowly pig.