If Steinhoff share holders can sue for their loss (based on ......... whatever they wana base it on), then I (personally) don't see any reason why not MTN share holders (and any other listed company) can also do so when their share price go down based on ........... (whatever they wana base it on, e.g. in case of MTN: management failure to adhere to Nigeria rules yet for a second time ...etc.).
Did the share holders get a written guarantee when they bought, that the share price will not go down !!!!!!
It's not about a guarantee that the price won't drop.
Obviously if a share price drops a company cannot be sued.
In this specific case it's about misrepresentation.
IF (it has to be proven) Jooste and SNH management for example used different SNH companies and inter-company loans to boost profit they created a false balance sheet and income statement.
This was (theoretically) done to inflate figures and obtain more loans to expand.
Then the company (or specific individual) can then be sued because they misrepresented figures in order to willingly dupe people into believe it was going well.