I see commercial lawn services driving in pickups a lot. It's a job that benefits from the open bed.

I tend to see them with either flatbed, trailer, or both. Occasionally box van plus trailer. Not usually a pickup and certainly not a luxury one.

I don't understand why flatbeds aren't more popular here. (Well if we assume that pickups aren't actually for utility then I guess it makes sense.)

You still need to tow.

You need body on frame, not the van unibody junk.

Most commercial services near me use trucks with or without a trailer. Painters tend to use vans, and some electricians. Everyone else has a truck with a logo on it. You can't tow well with a van, so it has to be a company that never tows.

Granted probably most people on here are CA or SV adjacent, which has a fairly idiosyncratic relationship with its service industries and stricter emissions regs.

Here (southeast US), lawn services use pickups, often also with a trailer. Most other services (plumbing, electrical, HVAC) use vans. Less sure about contractors, I interact with them less.