They really WOULD have gotten rid of Apartheid, on their own, and by now ; IF they had been left alone. Instead, a pack of tribal Commies now govern South Africa, and Mugabe, of Zimbabwe , is one of THE worst tyrants, ever .
I believe you are right, and left alone by the meddlers, SA would have found a better solution than the current near-anarchy they have. It will only get worse, more's the pity.
FYI, I posted this a while back to show a tiny bit of the "goings-on behind the scenes"--