Simple compared to ICE at their stage (NB: one has benefited from many centuries of man-hour work than the other). So, for their current level of efficiency, a

Simple compared to ICE at their stage (NB: one has benefited from many centuries of man-hour work than the other). So, for their current level of efficiency, a BEV is simpler than an ICE also fewer people are able to produce the former for cheaper than the latter.