They could grant them refugee status if they can't get visas. I really wonder whether a hostile government who wants to just take peoples' property away from them would grant them visas. And the non-farmer Afrikaners surely have some marketable skills as well to ease their absorption into a civilized society.
And then there is the law that puts a limit on how much money and personal stuff, one is allowed to take out of the country. Yes...they ARE checked, during departure!
Of course they are skilled...CPAs, lawyers, engineers of all kinds, IT techies, etc. !