I don't think funding or technology is the issue here. The issue is with politicians and the rise of the right-wing who either don't believe in climate change, or refuse to act due to corporate interests and agendas. Fixing climate change is not simple task, and it takes an enormous sacrifice to be made - sacrifices which not everyone is willing to make. Just look at the US. POTUS is doesn't believe in climate change, and republicans are lobbied and funded by massive fossil fuel corporations. In Australia, removing the coal industry would do a lot of damage to the economy. We had a carbon tax a few yrs back, which then got repealed shortly after since the people didn't like paying more. In the most recent election, the people voted for the party which is deadset against climate change. In America, republicans place economic growth over environmental protection, and they win their seats because that's what their constituents want - less regulation for better economic growth.
One of the largest major contributors to greenhouse gases is the dairy and cattle industry. The craving for meat in western civilization has led to massive deforestation for cattle farms, which produce enormous amounts of methane. How many people are willing to cut their meat consumption for the good of the planet?
One of the most sustainable solutions today is probably nuclear power. It is highly efficient, emits no greenhouse gases, but many oppose it due to fears of meltdowns.
While technology will definitely help reduce our dependence on fossil fuels, the limitation of using renewable energy is still predominantly driven by political, economic, and corporate interests. Fusion would solve all our problems, but it will come too late (as the saying goes, fusion is always 50yrs away).