The main challenge is poverty. We are yet to have a critical mass to afford most of these information age knowledge based products and services.
Once one person downloads any piece, it is shared by thousands - the artist is left with only exposure to do his stuff offline and charge.
Even for me, it is impossible for me to buy these things - I am for downloads be it - OS, software, movies, music and e-books.
Even buying local content of low quality is unnecessarily overpriced. A useless biography by a Kenyan retails at an average of Kshs. 2,500 while copies of great reads are retailing at Kshs. 50 in the streets. Same with music, films and games.