It is contradictory to expect an age of abundance. You cannot create energy, you can only transform it. And transforming energy is costly in.... energy! We have been using fossil fuels to fuel everything we do since we discovered them, without any other energy source being a viable replacement for most of our society. Fossil fuels come from hundreds of thousands of years of natural work to condense energy into a flammable fuel. Our tools are made from elements that come from dying stars that have accumulated in mines over millions of years. Our tools of exploitation (ressources gathering), transport and transformation are mostly fueled by fossil fuels across the world. Nothing in our world is sustainable, and the proof is that we have built our economy on a hundred years of ressource wars, human slavery (outsourcing) and the same fossil fuels we first discovered.

How can you create abundance when right now we are unable to share equally the outputs of our systems? Especially since we have passed out peak in petrol, and in tight petrol. Also we have passed our peaks or we will soon pass it in a lot of critical mineral resources. Finally the whole agricultural sector now relies on the engineering of nitrate, which relies on fossil fuels again. Construction also relies on fossil fuels because petrol is a key ingredient in our infrastructure.

There are very few viable alternatives which an AI can exploit to preserve growth (especially since growth is a mathematical function and not a physical reality in economics).

Solar and wind rely on fossil fuels to build and to maintain. They also have a life span so they have to be replaced (as do any electrical infrastructure). Nuclear is more long-term in matter of output but it requires A LOT of fossil fuels to start the machine, so any new facility should start it's construction ASAP. Even then it's limited in it's usage compared to fossil fuels, which litterally power our boats and planes. Fusion is this problem exponentiated. Fusion takes humungous ammounts of power to collect the energy stored in molecules. And even then to collect enough energy to power itself and create a kind of "cascade effect" where there's some extra energy in the output is, first of all kinda dreamy since energy cannot be created and second, alien tech. Or it's technology from the far future. Idk sounds ridiculous to me to expect it to solve everything since it was the same discourse everyone said about anything after petrol and no one was right about it... Nothing replaced petrol yet. We just added over it, in a complementary-ish way...

So yeah, AI is coming (if it's not here yet). Abundance? I don't think so. The opposite even. Worldwide famines and wars.

EDIT : wording