Honestly, because of the EPA regulations, it’s difficult and expensive to make the small trucks that were so popular in the 1980s and 1990s. Tesla could have cleaned up with a simple single-cab electric truck (especially if it came with fleet purchase options). Because of the economics of the situation if it were priced in the 25-35k range it would fly off the manufacturing lines and become the new standard workhorse for local businesses (think plumbers going out to 5-6 calls a day and then charging overnight), plus it would have the added benefit of a “bring your generator to the worksite” stuff.
They’d just have to be willing to strip a lot of the fancy electronic stuff out for manual things (like manual doors, environmental controls etc…).