Bitcoin (or another coin, if adopted sufficiently) could also serve as a vehicle for companies to frictionlessly participate in carbon offset programs internationally, since climate treaties, while important, are at best accomplishing vague goals through the apparatus of government beaurocracies. The potential innovations happening years from now need to also be figured into the environmental CB analysis.

Moore's Law also makes mining more efficient. But will be interesting to see if the environmental debate could leave an opening for PoS alts like ETH and ADA to gain some ground, or if BTC could move in that direction down the road.