The cynic in me says no, we'll just see existing players exploit those countries, but the optimist in me says there's a chance that many communities could see an economic boost or even transformation if they can get sufficient energy exports set up.
If we could place a huge solar farm in the Sahara and find a way to transport this energy worldwide, I think it would be great for them. They wouldn't have to transport directly, they could create some sort of fuel that could easily be transported all over the world.
There are hundreds of ways forward to a sustainable future and the technology already exists, and the political landscape is getting better every day. People aren't just going to give up, they are going to keep complaining until something is done. The majority of the world seems to know what is going on and they are upset about it. They aren't going to calm done until we are on the right path.
If carbon prices became very high, Iron/Steel would be the same (although with high carbon prices, aluminium would replace many uses of steel).