[smallerfish]

I don't think that's the primary difference.

With the ozone layer, we already had alternatives to CFCs that were viable. A handful of companies lost out on product lines, but they're all still doing fine today. Individuals didn't have to do anything.

With the problem of CO2 emissions, lifestyle changes are required to fundamentally solve the issue, and people aren't willing to make them. Yes, it's possible that geoengineering can buy us some time. It's possible there will be a battery revolution. Renewable energy is increasingly widespread. But there's nothing right now that's a drop-in replacement. The only sure-fire solution that we have right now is a widespread reduction of consumption and mobility, and very few people are on board with that.