This idea that Kenyan banks will walk into Ethiopia and magically start minting profits is one of the biggest fallacies. They'll have to consider all the following which don't bode well for profit:
1. Minimum paid up capital required of KES 2 Billion; while the KE banks don't have sufficient capital as it is they'll need atleast KES 15 Billion to ably compete with the biggest ET banks.
2. 18 other commercial banks already existing in the country with CBE, the government controlled bank controlling ~70% of the market.
3. The language barrier - setting up a greenfield retail banking operation will be almost impossible because Amharic is the working language.
4. The policy and regulatory environment is very different from that in KE e.g. requirement that banks buy zero coupon government infrastructure bonds, no floating forex, to reptriate profits you have to get approval of the NBE etc
5. The financial reporting, taxation reporting etc are much different in ET so the profits and ROE they currently see in ET banks maybe much lower in IFRS terms.
The bright side is that there is room on the technological side that can be exploited. ET banks are still in the age of brick and mortar mostly.
Investment philosophy development in progress...