You describe a textbook case of the tragedy of the commons, which is exactly what is happening. If we really wan't to address the problem then there needs to be new legislation, customers changing their behavior adequately is probably never going to happen. Regulations which ban certain goods or make them extremely expensive (like gasoline taxes) are politically impossible (see yellow vest movement) due to their uneven impact on the population. So the only alternative is probably massive government subsidies for anything that reduces CO2 emissions.