The problem is the people in general. They do not want to be inconvenienced, burdened, overly taxed, or told they have to go without something they are already taking for granted while wealthy and rich people gets to still enjoy it. It is a step backwards in society from any rational sense of reality.
This is why the governments who are concerned should not be trying to force more expensive tech onto people, they should not be trying to tax them in hopes that someone will get fed up and create a better alternative before replacing the government and ignoring their concerns. The governments, the UN, all those concerned, should be investing in direct research to make cleaner alternatives and perhaps even cleaner fossil energy sources that are both cost competitive and safe which could be implemented by any country at little to no royalty costs. If instead of Kyoto requiring countries to tax energy use in excess of so much emissions or penalizing some countries while ignoring others (Seriously, out of 157 or so countries, only 37 had limits on carbon emissions and of those 2 had limits they would reach in the future) and instead put as much effort and attention into researching and developing energy sources that would effectively meet those goals while being cost competitive, we would likely not be talking about this right now. We would likely either realize there isn't good alternatives or be instituting them as they are more productive and profitable.
But it would seem that everything done is for some other agenda. You can see those agendas if you look around enough.