We have the technology to pause the worst effects of climate change indefinitely for a few billion dollars a year: https://news.uchicago.edu/radical-solution-address-climate-c...
It’s far from a complete solution, but it works well enough that the future described in the article is much more a dark fantasy than a likely reality.
But it does very effectively prevent anything even approaching a “collapse.” Relatively cheaply, even.
Didn't happen.
The availability of economically competitive alternatives to fossil fuels (like cheap solar + batteries) is a very recent development.
We are talking about technology as such not necessarily economically competitive.
I wouldn't consider the technology of solar engineering mentioned in your link economically competitive either.
Doable but not cheap.
The same is true for the technology to prevent climate change. It exists but it was expensive.
Interestingly, it's still expensive now because even though the basic technology is cheaper, the timeframe is much shorter, so we have to achieve more in less time than if we had started earlier.
We discuss spending more money and taking extreme measures (shall we darken the clouds? bullshit) instead of taxing these fuckers out of existence and calling it a century.
I sure don't attribute my tailpipe emissions to the oil company that supplied the oil that was refined into the gasoline that I consume.