This excerpt from the TIMES article repasted below explains that Nairobi was seen as attractive for American technology company, Google, to set up a regional office because of government support for the Internet and a charasmatic champion of all things ICT within government (Dr. Bitange Ndemo).
"As the most developed country on the continent, South Africa is the obvious hub for online Africa. And yet when Google was looking for a regional base, it went first to Nairobi. Why? Because Kenya — notably its government and specifically Ndemo — embraced the Internet as few other nations have. Unlike other African regulators, who often see protecting state telecom monopolies as their duty, Ndemo was an early and enthusiastic liberalizer of telecoms and fiber networks and was instrumental in Kenya's decision to lay its own national undersea fiber cable when talks on a regional link failed. Ndemo says the state's ultimate aim is free mobile calls and e mail for every Kenyan who wants them, which he estimates at 60% to 80% of a population of 40 million. The driving principle behind his digital zeal, says Ndemo, is that "the Internet is a basic human right" and a necessity for economic growth."