This is impossible because it will stop the investment loop: investment cannot exist in the economy which is contracting and is supposed to contract indefinitel

This is impossible because it will stop the investment loop: investment cannot exist in the economy which is contracting and is supposed to contract indefinitely, because average return on investment will be negative. This is why such conditions will never happen. As for environmental concerns, huge successes by the Germans seems to prove that transition to renewable energy is possible, even with current or slightly better level of technology. This may take some 30-40 years for most developed countries, and about as much after that for the rest, but we seem to have that time given successes in development of shale gas, coalbed methane, and most recently, shale oil. Germans are good example because if they are outliers given the conditions they have, they are outliers in negative sense: they don't have much of either renewable or non-renewable resources, they are rich and need to consume a lot of the both, and cannot afford having energy too pricey because their economy is based on industrial exports so they need to stay competitive. If they can do it, everyone can do it. Others mostly don't care so far, soon they will have to.