This would increase the attraction of South Africa as a country to invest in.
This will lower the cost of capital and the investment hurdle rate, make SA more attractive for foreign direct investment, and support foreign portfolio investment in (local) equities.
When you have an economy that is 35 percent larger than ten years ago and you are still running on the same infrastructure, then you are heading for trouble.
This is causing losses at all sorts of levels, losses in business and losses in production that cannot be denied. If it persists then it will be negative for investment.
It will have to be abolished at some time.