I'm not sure about the exodus but we have a few little contracts with Eskom, through an appropriate level partner (he does much better than us; fancy house and big Benz even though he isn't a South African, by birth anyway) of course. We don't see any pale faces, not that we have a real gripe, the almost all young engineers etc we deal with are pleasant, sharp and quite diligent but really inexperienced. Gives us a gap.
The environmental, health and safety, "community liaison" etc personnel are a bit tiring and cost the projects plenty in extras.