We can't even get people to individually choose to wear a mask or stand a little bit away from each other when their immediate health depends on it. Nevermind asking people to… to do what? It's not like there's a choice. That's what the monopoly phase of capitalism means.
How can I choose not to use fossil fuels to get around? The buses don't go where I'm going or when I need to go. How can I choose to avoid the food without the plastic packaging? Almost all the food except for some niche items is packed in plastic. I don't even get the choice by picking fresh produce because it got to the store wrapped in plastic. How can I choose to use fewer resources? My devices, white goods, furniture, clothes, etc, are all built intentionally not to last – and if they do last, they get 'updated' to landfill mode.
I'm agreeing with you, to be clear. I do wonder how regulation can help, considering politicians don't regulate unless they're forced to. Partly because they are or they represent the bourgeoisie and wouldn't get anywhere near power if they wanted to do things differently. Political pressure can be built but the voices in some of the problematic comments in this thread are quite mainstream.
I suppose what I'm saying, and I'm not necessarily looking for an answer, is: if we get to the stage where the public consciousness and it's organisation are powerful enough to make politicians take climate action seriously, why would we leave it to those politicians to implement and why would we retain a system based on infinite growth? Why would we get to the point where we collectively decide to make the world a better place and then say, you know what, you can keep doing all the other extractivism, oppression, war, slum landlording, racist border controls, etc, just make sure you use recyclable packaging and transport it in electric vehicles?