If you don't mind, I wonder if you might expand on this? For me it seems a bit blithe. For instance, we know that higher energy prices cascade into many, if not most, consumer end items, and so I think it follows this decreases the standard of living generally.
I understand the important consideration of negative externalities, and how fossil fuels negatively impact 3rd parties (the world generally/climate change). I think the economic argument that there should be a carbon tax to account for these externalities is quite right. This is true regardless of climate change. So let's assume for arguments sake, we're going to tax above and beyond that to account for climate change as well.
Are we hoping then, by hiking the cost, it ushers in a new discovery of lower cost energy, with fewer externalities? And if this turns out to be the case, then these austerity measures if you like, turn out to be transient, and the temporary lower standard of living sacrifice is made for the betterment of posterity. Or is it simply we must accept a lower standard of living permanently lest we allow climate change to continue unabated, as it were?
Sorry if this distracts from the main point you were making.