The increase of wealth in a few people is shown by the number of people that it takes to reach 50% of humans wealth reducing over time. in 2016 61 people were needed to reach 50%, in 2017 43 were needed.
Why does this matter? well it means two things. Firstly a large proportion of humanity has few physical resources. When you are living hand to mouth, doing anything else is impossible. The second, is that those few with enormous resources have vastly bigger carbon footprints: this is not just thinking of Elon Musk and Jeff Bezos and their rocket rivalry (it is not hard to make an argument that space could help save us in the future), but 22,000 with private jets and the many millions more who are emitting tens of tonnes of carbon each year.
Those with extreme wealth therefore need to offset a great deal more than just their own carbon footprint. Billionaires should be throwing money at people sequestering carbon – it will protect their own future just as much as the poorest on planet earth