There is (eventually) no more profit to be made on energy when energy becomes virtually limitless.

There is (still) a lot of profit to be made on half-baked semi-AGI prospects.

It's not like the machines will ever be free, just the fuel. And it's not like the price of energy will go to zero, just be cheaper. To drive down the price of energy you first need to be taking a large slice of a trillion dollar pie.