Remember carbon credits. This was the magical scheme that would allow Al Gore to live in his energy profligate house and various celebrities to fly around the globe in the private jets, pumping tons of carbon into the atmosphere, and do so with a clean conscience. They probably would have done it anyway but gestures count and if you can afford to buy indulgences, then you pick up a few (cheap) then go out and sin some more.
Well, the market in carbon credits has, it seems, tanked.
One suspects that no Google jets will be grounded, nor any Hollywood mansions downsized.