MOON Ki has it right that M-PESA is a niche product that rides on culture. Sambaza concept is a micro-Harambee system where everyone contributes to the neighbor's medical bill. M-KOPA will do very well based on this concept. Micro-lending is the very same model -- promoting business by redressing banking as communal.
OECD and everyone-for-himself societies use plastic and don't need to be spoonfed. Just look at the massive debts in US and China... where is the market there?
Bursary funds (Chacha), etc should also go corporate/private to expand education, agric, etc. If you want financial or economic inclusion -- micros and fringe society (women, youth, peasants, pastoralists,? ) to participate in nation building just redress scary banking halls and collateral with friendly faces (ala Equity) and accessibility (mobile). It's smart branding.
And as noted earlier Safaricom has been primed to reap massive opportunities besides M-PESA. It seems to squander most of those - tech, digital media, entertainment, e-commerce, etc. Equity is going into agribusiness too so the Vodafone "shackles" story is pure baloney.