The Guardian reported (earlier in October) that "a renewable energy revolution could end the world’s rising demand for oil and coal in the 2020s, decades ahead of forecasts from oil and mining companies."
Comment: With the tiniest nudge from the US government, which still sets the tone for the world economy, the rate of conversion to sustainable energy could be accelerated. Even the current energy companies could benefit: Though they have historically made $ by the sale of fuels and related products (plastics, another problem area), they have also created the world's greatest systems of logistics and commodity management.
So why are they dragging their feet? Converting to this service function as their primary function could guarantee their continuation regardless of the decline of fuels. One would think shareholders who value long-term appreciation would support this approach in huge numbers. As for the speculators, who gives a damn?