I think this conflates capitalism with lack of coordination. We could fix global warming today via regulation. Even if our government was socialist, it would probably still not be curbing emissions due to trying to achieve some other non-capital goal.
Second, there isn’t any need to falsely imply our species is going to die because of climate change. No model points at that. Billions of people having crappier lives and dying sooner should be enough motivation.
Apple and other companies with web browsers are probably our biggest hope. People will complain if websites just ‘stop working’ one day because of their browser choice.
That said, I’m probably fooling myself. PECO.com, a huge electric company, doesn’t work unless I’m in incognito mode. I think it fails if you are signed into another corporation’s Microsoft 365 account. But they don’t seem to care.