I think we can all agree that the resources on earth are finite, I think we can also all agree that our population is increasing in an exponential rate (not that it should, but that it is).
As long as we dismiss the possibility of using our technology to use resources outside of earth we will be stuck fighting for a greater share of the diminishing resources on earth.
No matter how much you recycle there is only a finite amount of everything on earth.
Living on mars is less of a fantasy now than going to the moon was just 90 years ago. We have people living for extended periods of time in orbit, we already have the technology, we just don't have the economic base.
We expand or we go extinct that's how it is, you might not like it but that's how it is.
As far as the billionaires, dude, the billionaires have it awesome here on earth i don't think they will be moving.
You are focusing on now, it's not about now and it's not about us, it's about the species, if our ancestors gave up in the face on every obstacle we would still number about 1000 in a small valley in Africa or most likely we would be extinct. Life expands and to quote Jurassic park life finds a way.
A small tangent, I don't get NFTs, what's stopping me from creating a new NFT with beeples image, or if there is hashing involved with beeples image and a couple of pixels changed?