Instead, the electricians, plumbers, etc. drive vans. They're smaller in footprint and easier to get things in and out of. Some have a covered and insulated shop inside (mostly the electricians) while others are purely for transportation. The materials and machinery that don't fit are too large be transported by a pickup too. Instead, lorries arrive with two or three pieces of machinery on a flatbed, or a single piece of machinery and a bunch of big pieces of material in a closed trailer. I can't tell where a pickup truck would ever be more useful in the construction landscape I'm seeing literally outside my window.
That being said, I don't really care to litigate the pros and cons between work vans and work trucks. I was mostly trying to make the point that there are legitimate uses of work trucks. It's very easy for the HN crowd to be in a kind of bubble where they wouldn't understand that, so I thought I'd add some nuance to the conversation.
At least half of the serious landscapers that I see tow a trailer with their tools, bins and stuff on it. Wouldn't matter much what was pulling it, as long as it could pull it.