Nothing is exactly as it seems. Remember, a good load of the "apartheid" laws were already in place before 1910 (the union). Those were introduced by Milner.
In terms of racism, the most racist one's i have met were the one's having emigrated here. Some - I think - found it very nice with being superior.
In many ways, the afrikaaners are behaving like another "tribe" here, albeit white tribe. They belong here as much as anyone else, and that colours the outlook I think.
Smuts was not interested in majortity society. He was fully behind the pre-apartheid laws.
We have to look at some of the significant events:
1976: the Soweto riots. this established in everybody's mind the notion of black political aspirations in general.
1984: State of emergency: This convinced everybody that it was over.
PW Botha did not have any problems with black people having good jobs, etc. He tried to create a black middle class, because it would, he hoped, negate political aspirations. He was not interested in a black government.
He also chucked a lot of the "silly" apartheid laws, so it was not a matter of urban cleansing or those things (although i think he supported white neighborhoods).
The homelands were designed for something else.
In essence, as specifically the mining sector used a lot of black labour, this was a huge expenditure. We had (and have) a significant part of the workforce being migrant labour, coming frm other countries.
So, by robbing the workers of their SA citizenship, and giving them citizenship in the homelands, theyu became migrant workers. Then put in a little dictator as the ruler to ensure no ANC and no unrest. If the workers did not like it, they could get kicked out of SA and put back to thir "own" country. That took care of some of the labour costs. smart?
It is probably not a matter of an afrikaaner state, but more a matter of continuing white minority rule. There was no hope of making amends with the outside world.
On top of, the upcoming generation, who had also been travelling abroad, stqrted to see the simple and pure injustice of apartheid and would have voted them out anyway. it waqs sort of in the air in the 1980's and 1990's
In my opinion, it all comes down to middle class again. Make them poor and they go for the kill. They voted for the continuation in the white referendum (70%). They would not care about the skin colour of the president as long as he/she can look after them.
Ivan