Information Marketing
Thus a higher profit margin.
I believe that the reason information marketing works is because knowledge is power. A products value is then based upon the power in which it grants the reader. Maybe that's generating 1000 leads, or making their first sale, or making 100 sales. Anything that people find valuable enough to exchange their paper currency for.
What do you guys think about information marketing? It's cool to sell physical products too, still very lucrative...