We could of course use more willingness to sacrifice luxuries but "just stop releasing so much carbon" isn't the solution because emissions is just one part of

We could of course use more willingness to sacrifice luxuries but "just stop releasing so much carbon" isn't the solution because emissions is just one part of the optimization problem. The entire global economy is the engine that will produce alternatives to fossil fuels despite it running on fossil fuels. There are obvious cases where carbon is worth emitting e.g. Concrete for a nuclear power plant, Diesel trucks to deliver solar panels, smelting steel for train tracks. Barring turning everything off tomorrow at astronomical human cost, there is some optimal amount of emissions and if used effectively Carbon Capture/Storage (primarily point source) could shift the Pareto front in the right direction.