Without electrified cars, much less resources would be required to produce batteries and electric infrastructure. We would produce less harmful waste in the long run.
The battery electrified car does not have a better ecological footprint, as of now. It only has the potential to perform better, if we would use more renewables and less toxic and polluting processes... Which we also probably won't, cause we like our stuff cheap.
So nothing much will happen, but there is a big chance that not electricfying the car could be better for the environment and the climate. If we would act smart about it.
Also over an EV’s total lifetime it is significantly less polluting than an ICE even including manufacturing. And the automakers are already finding ways to avoid rare earths etc precisely because they are so expensive.