Wise governments understand that if they want to make their nation (and eventually, themselves) wealthy they have to let their most talented citizens become wealthy, also.
African politicians, just like American Democrats, want to become wealthy now by looting and crushing their potential rivals, whatever the negative impact may be on the society as a whole.
Mozambiques president Samora Machel, at the time of Zimbabwes independence, advised Mugabwe: Keep your whites.
He didn't listen.