The second niche as a rule of thumb pollutes-more-than-God already(0)

I am skeptical that lifting barriers to them polluting more would land any type of net benefit given that ultra-luxury products such as said jets don't tend to land outsized downstream advancements than let's say, funding basic sciences such as what Boeing or Airbus are already doing

(0) https://www.oxfam.org/en/press-releases/billionaire-emits-mi...

If it could be proved that things like faster private jets or faster planes could benefit in a sizeable and proportionate way to the general public, then yeah I would be in favor of this too, but as it stands I don't find the available info compelling, I'd rather them to pay more taxes