So the end of fossil fuels will probably wreck rich countries, too. Especially given that no country is remotely getting prepared for that.
Right now we can develop photovoltaic and wind farms in a world that has a lot of fossil fuels. But remove the fossil fuels today, and everything collapses. The question is therefore: can we transition to clean energy before the end of fossil fuels? And the answer is really not clear. Actually it seems more likely that we cannot transition: we will probably have to do with less energy.
Which in turn means that all the tech projects that try to replace "unlimited fossil fuels" by "unlimited clean energy" are just counting on the fact that somebody will solve the problem for them. What's the point of having electric sports cars if we don't have enough energy to use them?
AI is in the business of doing more with more. Chances are that we will have to do less with less.
We won't though because of the same trope Bill Gates et al regurgitate...this tech will solve all the problems, poor people need it...
What's a shame we need to rush everything, it's a shame couldn't have just done less with less for longer, built more efficient understandable systems and just enjoyed the ride a little more.