A subcompact hatchback has always been a weak selling segment despite being one of the cheapest...Depending on the maker, the mid/compact SUV segment (Equinox, CRV, Rav4) outsells a subcompact hatches (Spark/Sonic hatch, Fit, Yaris) by 5-10 times...Heck the top 3 selling models are Full size pickups...
Make no mistake, if the Bolt looked like FNR-X concept, even if was downsized for the subcompact segment it would probably have double the sales...88% of all Bolts were sold in IMAGE CONSCIENCE California where if the buyer can afford the Bolt, high odds they're already driving a BMW/MB/Lexus/Audi and most wouldn't give up their ICE luxury car for a Bolt even if it was $19,995 with 1000 miles of range...