Which of the following is NOT true about online marketplaces?

In many ways, online marketplaces are the perfect business model. Since they facilitate transactions between independent suppliers and customers rather than take possession of and responsibility for the products or services in question, they have inherently low cost structures and fat gross margins. They are highly defensible once established, owing to network effects.

The resultant multi-faceted approach is of crucial importance to learning on the part of the visitor, since the imparting of information from differing angles not only seeks to reinforce more effectively a central message, but also allows for a variety of cognitive levels among a diverse audience, thus ensuring maximum pedagogical potential.