They'd have to give up their kaffir servents. You think the women would be able to cook and clean? They might get their hands dirty.
The farmers (who are hard headed but hard working) would lose their cheap labor (you think they run family farms like here, with help from their kids? No. They have dozens of farm workers to do the hard work).
Except for the farmers, who are racist but work hard, I have little patience with the spoiled South Africans. FYI: There are two white "tribes" in South Africa. The Boers are racist, but usually hard workers. They could indeed get their own land: carve up and keep it. They have done so in the past (remember the Boer wars?). And unlike the farmers in Zimbabwe, most have 300 year roots in Africa, and no home country. If they get pushed too far, South Africa could blow up.
The Brits are liberal city dwellers, who merely wanted to be lords of the manor, be overpaid in cushy jobs and have cheap houseboys to do the housework.