We really shouldn't have waited this long to start transitioning to clean energy. If 2050 really is the point of no return (somewhere around then, from what I've heard), we'll have to replace over a century of infrastructure in about 20 years. And scaling is the hardest part. (we've already done some scaling, but renewables only account for ~20% of US energy, so we have to 5x that) Then, there's less developed countries, which can't fund subsidies and have unstable governments making it less likely for big infrastructure projects to get started anyways.

Not to mention oil-based economies. Many of them are just sticking their heads in the sand pretending oil will hold up their economy forever. This will be disastrous for them, and I'm sure many will lobby to stop clean energy (which will only make things worse for the planet). Only Saudi Arabia is really trying to diversify. As I said, we really should have started sooner so we could get the politics out of the way and we could just be focusing on deployment at scale today.