Are WordPress themes a commodity?

Chris Wallace of UpThemes touches on niches and marketing in response to David Perel's recent article on the state of the WordPress theme industry.

If you want to be successful in the WordPress theme industry, you need to have a better strategy behind releasing themes other than, “Well, I noticed e-commerce themes were popular so I figured I would make one, too.” There is much more to building a product than just seeing someone else succeed with a product and immediately copying their idea. As a side note, banking on being in the “Newest Items” section on ThemeForest for a week isn’t a great strategy for sustained sales growth.