ToxicBunny
Oi! Leave me out of this...
How so ?
Many fibre providers don't use Telkom infrastructure.
The Transit providers those ISPs use very likely do use Telkom infrastructure at some point or they peer with Telkom and some site you that you access locally may only available over routing on Telkom infrastructure. Even more specifically, if the ISP uses SAT3/WACS for any international bandwidth requirements, then they are paying Telkom for that pleasure.