[hutzlibu]

"With no deaths, wealth concentration grows to the extreme. A handful of people get to control the entire world."

I rather think the treatment will be so expensive, that only the very rich can afford it - and then you have rich immortal overlords, ruling over the lowly mortals.

But that is not a given. If there is treatment for everyone, it might make people more responsible.

Most people today won't have to feel the real consequences once global warming hits hard. But if they know they might - they might see things in a different way. And this goes for everything, also how to maintain a sustainable reproduction.