You need to check out the Swift trucking memes, lol.
I can go to Penskie and rent a large straight-frame with hydraulic brakes right now, no special license required. If I took the air brake course, I could rent an even heavier one. It is not difficult to be able to get behind the wheel of something much, MUCH larger than a pickup.
Let's compare this to airplanes. There are different licenses depending on what you are flying. This means that buddy in his personal Cesna puddle jumper isn't subject to the same restrictions and aptitude testing as the guy flying the 747.
The problem is, we don't have that same range of qualification/testing for transport. It is far easier to get your heavy truck license than it is your jet plane license, and you don't need thousands of hours before you can haul 80,000lbs of cargo.
If you take a look at the qualifications and escalating requirements for training and experience coupled to responsibility in this document:
Pilot-Licensing-in-Canada-2021.pdf (bramptonflightcentre.com)
You can see the relative chasm that exists here.
The problem of course is that transport truck operation is very sensitive to labour costs, and you can't keep those down if you impose these sorts of training and experience requirements.