It is a complex problem. As far as I understand, in the criticism to any work on climate change in the west (at least in the US) is that people are still debating if it is real or not, in the face of evidence; hence there's lack of political will. And, in countries like India or China, the criticism is that lots of people need cheap fuel to get out of poverty and imposing restrictions would impede that. Though, the per capita consumption is way less compared to countries like US. That said, I wouldn't say these countries are not doing anything. I can speak for India, for example, there is the Jawaharlal Nehru National Solar Mission[0] that is a goal to achieve 100,000 MW of solar power generation by 2022 and I see developments underway in many states in India. There are similar initiatives in other areas like Wind energy etc.
And, the defeatist attitude that no one takes it seriously, lets just do nothing and hope it works out is dangerous. As far as I can tell, the island nations will be the first affected, not to mention harsher weather, more storms, followed by massive shortages of food and water. I wouldn't be surprised if that leads to more wars than funding research and innovation.
[0] https://en.wikipedia.org/wiki/Jawaharlal_Nehru_National_Sola...