The thing to remember here is that NA and EU can afford to reduce their emissions since they consume Chinese/Indian products in the first place. If more things had to be manufactured in-house, the local western emissions would be higher.

So on top of that, China and India (and other developing nations) need to be properly incentivized to switch to more friendly technologies. China saw this with their massive coal usage causing intense smog and moving quite a bit to solar (note: haven't checked what the current status of that is so if it's changed I could be wrong)