You are right. We are not equipped to do so.
Global Warming is the consequence of rapid material improvement. We are not prepared, as a species, to give up that material wealth for a "promise" that it would prevent some sort of hypothetical disaster. It's too big of a sacrifice to make on a society bereft of faith in anything anymore.
You highlight the ideological issue I have with how the whole issue is viewed. You wrote:
"When do goverments do anything besides caving in to corporate interests after all"
The problem here isn't corporate interests. The problem here is the byproduct of modern industrialization. Once you really digest that the problem of global warming isn't some greedy cabal, but a multi layered economic reality we all contribute to, benefit from, and refuse to give up on, is when you start digging at the heart of the issue.
Which major country wants to sacrifice their material wealth and industrial capacity to reduce their impact on a global issue? China – increasingly becoming command-economy – produces 1/3rd of all CO2 emissions int he world. Twice as much as the US. In that context, is it fair to ask a country like, say, Belgium, to sacrifice their material wealth just to offset a tiny fraction of what China does?
Now layer that with the fact that most of our western societies are democratic, i.e political institutions are beholden to a multitude of groups – some competing some cooperating – to reap greater benefits for themselves.
So I have to ask, is it fair for a country that produces a tiny fraction of pollutants and CO2 emissions to make massive economic sacrifices, just to reduce their footprint by half? Is it fair for the farmers, the miners, the laborers in industrial sectors to have to lose their livelihood to offset a tiny fraction of what this country – halfway around the world – is doing? No. It's not just unfair, it is politically suicidal as we are seeing.
The new Zelda game out and it's a hit. You want it so you buy it, but you also have to buy the console. Both the console and the game utilize rare-earth materials for their respective chips. These rare earth materials are pollution-heavy, causing major ecological problems. The plastic shells of the console and the game is made out of oil by product. But most people will simply never think about it in those terms. Even if they declare themselves the biggest environmentalists. They will usually participate in, utilize, and benefit from the system they argue they are against.
No one wants to give this up for some sort of hypothetical. Especially if you are the only one that is making the sacrifice.