Everybody wanted companies to divest from South Africa in the 90s. South Africa was a first world nation back then with a booming economy. Soon as they kicked the whites out of power it became a hell hole. The only difference is that Sudan is a hell hole now. I guess it can't get any worse.
Another difference would be that South Africa wasn't engaging in genocide. They wouldn't let blacks vote. That was a big problem. Curiously, it's ok when it happens in every other African country run by dictators for life.