The average western citizen might emit more than what is sustainable already but we're talking about people that are emitting orders of magnitude more than that.
But there are orders of magnitude fewer ultra rich than there are average western citizens. Focusing on every westerner reducing their GHG emissions a bit would have far more substantial results than even completely eliminating 100% of the GHG emissions from the ultra rich.
The ultra rich have orders of magnitude more influence over politics, regulation, and private business than the average western citizen, so I would think that focusing on the ultra rich in one way or another should yield pretty substantial results.
well, you're doing a fantastic job of outsourcing their guilt, i'm sure they sleep just fine at night at 30k feet while simultaneously convincing you to reduce your quality of life.