The trouble is, first you have to solve the political problem of proposals like that making e.g. property speculators with money to spend on political lobbying, deeply unhappy.
Unruh characterises the present situation as that of "lock-in", i.e. one in which technology, society, and governing institutions have co-evolved in such a way as to develop self-reinforcing barriers to change which inhibit policy action even in the face of observable energy and food security and climate instability risks.
Under these conditions, he argues, you have three options: do nothing while treating the symptoms, alter bits of the system while preserving overall system architecture, or replacing the system entirely. The latter has almost no historical precedent at societal scale, but is conceivable: for example, decentralisation of generating capacity is technically possible, if highly disruptive; likewise rurifying current urban populations.
Central to the success of any political program of change is identifying and overcoming conditions promoting lock-in. Two options - endogenous, and exogenous. He is pessimistic about the possibility of momentum for change originating spontaneously from within the system - conservative forces are simply too powerful (that's why we are locked in). More likely is some exogenous shock - a mini-crisis - sufficiently powerful to disturb a component of the lock-in (e.g. public opinion) but not so powerful as to induce collapse of the system. (The impact of the collapse of the Soviet Union on the Cuban and SK economies would be examples).
The latter is my view of how this will pan out (if we are lucky). I expect it will be something like rolling power cuts and energy rationing as the 25% of the UK's electricity generating capacity scheduled for decommissioning in the next decade goes down without replacement, overloading the remaining infrastructure, coupled with quadrupling energy costs as conventional oil supplies fall and get replaced by unaffordable unconventionals plunging the middle classes into energy poverty and quadrupling the winter death rate. Sufficient to reveal the systemic nature of the problem and the suddenly very visible inadequacy of renewable technologies to preserve the illusion of "business as usual". Conversely, I am highly pessimistic about the possibility of arriving at such an understanding and basis for collective action through a process of rational thought and debate.
I imagine the response will be largely self organised, probably at small community level, rather than the result of some political policy change. I expect there to be significant institutional resistance to such change, from unexpected places (local councils, for example, will resist community based cashless transaction systems because it will deny them tax revenues to fund public pension schemes and public liabilities). I expect demand for resources required for sustainable living under these new conditions will exceed supply, prompting conflict. I fear organised opportunistic responses by our equivalents of Hitler's 1930's brownshirts promising to restore "business as usual" in return for power, and watch the current government's sudden enthusiasm for immigration control and preemptive draconian extensions of their emergency legislative powers for civil disorder control with a certain amount of pre-recognition.
Unruh's useful paper here: "Escaping Carbon Lock-in" (Unruh, 2002) (
link)