I'm American and I lived and worked in Kenya (as a Linux sysadmin) for over eight years until recently. There were rumors of this sort of "Kenyanization" happening for years. I think this move is a mistake, and only serves as pandering to populist politics. Relevant commentary from another American friend working in cloud startup space in Nairobi a few years ago:

http://varud.com/kenyanization-and-its-affect-on-startups