History will judge Nkurunziza as a man who brought unnecessary pain to a nation that had long suffered from political misrule.
The Dos Santos family and their supporters claim they are the objects of political persecution.
Crony capitalism became firmly embedded under Ben Ali, benefiting his family and close friends.
It remains to be seen how much longer the 'old men syndrome' will persist in Zimbabwe, Namibia and South Africa, despite growing frustration among the politically powerless.
Robert Mugabe's years of playing one group off against the other to favour himself finally wore too thin in 2017.
Africa's democracies have grown stronger during a period in which the world is backsliding on democracy.