The only people who have enough power to solve the problem are the people building better technology. If you can't replace gasoline with something equally affordable, people will not accept it.

Most leaders - at least in democratic countries - don't actually have a lot of power to do things that the people don't want them to do. Just look at Macron attempting to raise taxes on gasoline. He wishes he had approval ratings as "good" as those of Donald Trump. People are rioting in the streets.

Now perhaps if you have a really wealthy country like Norway, you can afford to subsidize electric vehicles or renewable energy. The same won't work for other countries, especially emerging economies.