South Africa's inequality and resultant crime can't be blamed on a one-state solution. The peaceful transition from Apartheid to an inclusive democracy absolutely was a success story in terms of overall wellbeing.
The remaining inequality (especially along racial lines), government corruption, and violent crime are terrible problems, yes, but pale in comparison to the dehumanising codified violence of Apartheid.
Are you seriously proposing that a two-state solution would have served the people of South Africa as a whole better in the long run? I think the resultant inequality would have been far worse. Do you have another proposal?
(Edit to point out that I'm not implying that what worked for South Africa can or can't work for Israel. This comment is about South Africa.)
(As an aside) I know this community prefers not to focus on weak arguments and avoid flame wars (no pun intended), but I have to point out blatant fear mongering:
> where people install flamethrowers on their cars because violent carjackings are so common
I wouldn't repeat this as fact. The device referenced was a short-lived gimmick from 1998, four years after South Africa's first democratic election. It is in no way a reflection of reality.
Yes, carjackings are a problem in South Africa, but repeating the flamethrower story reads like FUD.