It wouldn't factor in even then, because it's a classic externality.
Polluters don't contribute individually to climate change just for themselves or their customers, they contribute -- each in a small way -- to the problem for everyone on the planet.
If factory pollution was somehow isolated to just the factory or people buying things from that factory, instead of just going into everyone's air, regulation would be much less necessary, because in that case yes, consumer behavior would change. People wouldn't want smog inside their homes because they bought a new widget from a polluting manufacturer.
This is the inherent problem with people complaining that they have the right to pollute with their cars or factories or what have you as an argument against regulation. The pollution doesn't just stay next to the person creating it! If someone invents a box that captures all the fumes that car puts off and localizes it to the car itself, then sure, pollute all you want.
Polluters don't contribute individually to climate change just for themselves or their customers, they contribute -- each in a small way -- to the problem for everyone on the planet.
If factory pollution was somehow isolated to just the factory or people buying things from that factory, instead of just going into everyone's air, regulation would be much less necessary, because in that case yes, consumer behavior would change. People wouldn't want smog inside their homes because they bought a new widget from a polluting manufacturer.
This is the inherent problem with people complaining that they have the right to pollute with their cars or factories or what have you as an argument against regulation. The pollution doesn't just stay next to the person creating it! If someone invents a box that captures all the fumes that car puts off and localizes it to the car itself, then sure, pollute all you want.