Stephen,
This is a poor and shallow comparison of the South African situation to that of Zimbabwe.

For a good insight, read RW Johnson's rationale why HE does not believe SA will go the same route (much more urbanised and politically active population, no refuge south of the country, just the Atlantic ocean - nowhere to go for most Saffers etc).

You reach similar conclusions to Johnson, it is just that his analysis is detailed and logical, not superficial.