Is wealth and GDP per capita in South Africa increasing or decreasing after apartheid?
Righting a terrible, terrible moral wrong should come regardless of the short-term economic costs. To suggest that economic concerns trump overturning codified racism is one of the most disheartening things I've read on this site. (I do hope I've misread your comment as a support of apartheid.)
2. His point- that certain countries were much better run while colonized still stands (check out Zimbabwe for example).