Political leaders are more interested in maintaining the status quo, than in fundamnetally changing the entire global economy, and upsetting the apple cart. After all, the status quo, made them important, dramatic to changes the condition of the world, and they could be out in the cold quicker than Winston Churchill after World War 2.
The sad fact is, that is the leaders of nations that precieve the best interests of the nation. While funding for energy research is important, its equally important (to the leadership) to keep the pace slow, so as not to alarm international markets, and upset apple carts.
What we need is a Howard Hughes. Someone who could fund large scale research projects, and "damn the torpedoes".