RAM sells a small truck in Mexico called RAM 700 and it’s getting popular for work purposes (specially in urban areas).
I have no idea why it’s not being sold in the US market.
The closest us equivalent in the US may be a Hyundai Santa Cruz, which sells ok-ish, the Honda rigid line, which sells okish too, and the Ford Maverick which sells like hot cakes.
RAM, like Ford, had the reputation. A rebadged Fiat toro may do the trick.
https://www.cnbc.com/amp/2021/03/04/ford-quietly-begins-prod...
Therefore, it's far easier to build a larger vehicle to meet the requirements.
Because they know they can sell bigger trucks for more money.