This case seems like an aberration, though? I think the logic goes something like this: bitcoin miners have a huge incentive to find the cheapest power in the world; renewable energy sources are cheaper than fossil fuels and getting cheaper all the time; therefore miners will prefer renewable power.
That's enough to eliminate them over time, because the plants do get old eventually. And the trend is for renewables to get even cheaper - this means any study using current prices is going to be extremely pessimistic, it's going to get even cheaper and obsolete your results.
