There's just one success story for Nigeria iroko.ng - this however targets foreign based Africans who are used to paying online and for whom - per movie is nothing.
According to what I hear, Iroko is highly selective and only allows quality movies on its site. Because of this, some producers upped their quality level and sold exclusively via the site. They recently branched into original content - 2 years ago.
Have you heard of MPESA ?
I don't know about the other countries but I lived in Ghana for about 5 years and I can assure you M-PESA's a shadow there. Vodafone and MTN are the kings of Mobile money in Ghana.
But even in Ghana, cash is still the undisputed champion. The growth of mobile money there has slowed down dramatically because of registration requirements and operator fees.