In my business I have a Heavy Duty, employer supplied, 4X4 Suburban that is set up for my electronic tooling...everything behind the front seat is on a large, pull-out tool and equipment slider that pulls out 110% out the tail end.
But I know that van will hold 2x, maybe 3x what I hold.
I can’t tell you how many times I have had any of my vans maxed out in weight. When I used to do roofing and siding all the time I had ladders, picks, pump jacks, compressors etc loaded and off to the job.
They are work vehicles, they had better hold their weight and perform. There is no way in this business a small, 4 cyl truck could handle a real contractors equipment.