Any system that ignore's incentives with regards to human behaviour will turn into a formula for tyranny and misery.
The type of technological save you're talking about is already possible. The problem is we have no political or societal will to get it done. Turning Siberia into a breadbasket to feed the world (among many other needed solution) most likely requires exactly the type of tyranny the OP is talking about.
Inevitably, climate change will directly or indirectly kill millions of people, as well as destroy many biomes. That should be enough to motivate people to want to change. In my opinion, doom and gloom scenarios encourage people to be more skeptical.