As for the comment on renewables leaving Eskom without paying customers: https://mybroadband.co.za/news/energy/521167-people-dumping-... (it's more of an opinion piece, but given how much non-payment there is by many low income municipalities, I see this as a potential reality)
I am definitely predicting the people-dumping-eskom scenario. I will totally not be surprised if this happens.
Based on my limited experience and a sample size <5 I can attest to the dramatic quality of life improvement it's made to our household, and it's getting cheaper by the month to buy and install. More and more businesses and new developments are going up with rooftop solar from the start. If you are in the market for a house today, I'm pretty sure that rooftop solar will be one of those things on the "really-nice-to-have" list of things that include a pool, double garage and a built-in braai (bbq). One of these days it's going to move over to the "essential-must-have" list.
10 years from now Eskom is going to excitedly announce "we fixed loadshedding" only for the whole taxpayer base to say "so what"
I agree with you, but I see things going a bit slower so long as most households are renting. Cities also face the challenge that the solar will need to be done by apartment building corporates as a whole.
There is the idea of "renter friendly solar" - either rented solar done in collaboration with the landlord, or varying degrees of portable solution i.e. not connecting to mains to power the entire house but just to a battery that you power a handful of things off of.
