There is a lot of debate over global warming, economic systems, and politics that distracts us from the big elephant in the room and that is this... If we do not invest our remaining fossil fuel resources heavily into building new sustainable and practical replacements soon, we will dwindle away the remaining economically extractable resources and then we will have no capacity to rebuild, we will be in a situation where only that population which the Earth is capable of sustaining as hunter-gatherers will survive, the rest will perish, and any upward trajectory for mankind will be lost forever.

If we fight over remaining resources, that depletes our remaining fuel without putting new sustainable resources in place.

If we fight over economic systems because some people don't like other people having more than them and so want a larger portion of the pie, the end result is the pie shrinks and everyone starves.

Large projects like Supergrids that can transport renewables from where they are produced to where demand exists, require massive investments, so do grid storage facilities, geo-thermal power plants, molten salt breeder reactor which is a technology we need, not only for energy production, but also to burn existing actinide waste to transform a million year nuclear legacy into a more manageable 300 year one.

These things require a concentration of wealth and they require it in a way that decisions can be made efficiently. Decisions by committee are not efficient, if you need proof look at the launch costs of NASA verses SpaceX. This is why communistic economic solutions can not bring us out of our current malaise.