A very sensible and pragmatic solution that will help many previously disadvantaged. These 3 reasons are why the ANC will not consider it. Same story as the mooted fuel levy instead of the E-tolls.
If the ANC cared about the poor, they would provide them with decent education, decent healthcare, not steal R60 billion per annum out of their mouths (Govt AG)  and give urban RDP house owners, rural dwellers and land beneficiaries title deeds (the latter after a quality, free 3 year agri and business course).