Naaah they move. The smart ones anyway. Australia New Zealand and the US have been very lucky to have them come.
Afrikaner motto: A Boer makes a plan.
I know two guys who moved here from SA. One of them told me that when they got here it was the first time in years his wife could close her eyes in the shower to wash her face. They had a huge wall around their house and were still terrified. He said in Johannesburg having a BMW means break my windows.