I think once the rubber meets the road we'll resolve and completely reverse climate change. That being said I might be too confident in our species' engineering ability.
I think you're not thinking critically enough on who it will be solved for.
Rich people may even benefit from climate change in the short term, since during an economic downturn they can move their assets around, take risks, buy cheaper labor, etc, while everyone else is scrambling.
I definitely think the US will pull the trigger on stratosphere aerosol injection and other geoengineering technologies before letting Miami go underwater.
But... this debate has been going on a long time
You could compare with how rich countries handled the pandemic, and then consider that the pandemic was relatively easy with new vaccine candidates almost immediately ready for testing.
Also compare with how we handle various natural disasters. What is California doing about wildfires? The rich people in Malibu still lose their homes.
How about preparing for drought? What is Houston doing about hurricanes? Is Texas ready for the next winter storm?
Rich people will handle this with their own disaster preparation (sometimes) and moving if necessary.
You don't think about driving slower during the 20ms between the impact and the airbag hitting your face do you ?
Will seriously try to be resolved, but with no guarantees.