You are far too optimistic. The issue is not this or that corporation, even corporate activity is at this point meaningless. Clearly China is gambling on climate change having little effect and so are many others, especially if you are a developing nation that stance is very enticing.

You are not trying to get some corporation to "go green", you are trying to influence nation state policy. Assasinating some CEO is as meaningless as vandalizing a museum. The only way to meet any "climate goal" is if most nations purposefully hinder their economies, organized boycots against offenders. But lets face it: life without "Made in China", is quite difficult. For an individual as well as a nation.