No. No license.
Because the companies are not licensed to haul passengers for pay.
There are a bunch of rules for that, including collecting data about passengers, ticketing and tariff rules, safety of accommodations, provision of bathrooms, etc. etc. In a Federal country, there will also be rules at the state level for every state transited, so you get a lot of weird problems like “Can’t cut the corner through Oklahoma”.
Needless to say, being inside the cargo area is Right Out. When stowaways try to sneak in the cargo area, they are often killed by shifting loads.
Also, a long-distance move will involve stops and driver changes. The next set of drivers might not appreciate the passenger none too much.
Also, because of the human factors, long-distance moves can be quite circuitous. If your load doesn’t “cube out” the truck, they may put up a separator and load someone else’s stuff behind yours. They may stop at a depot, back your truck up against a wall (so the doors can’t be opened) and the drivers head home to their families to sleep in their own bed, and now security has this random person inside the yard to contend with.
Everything I said above applies to general “out of the phone book” long-haul commercial movers. Those guys are full-service turnkey – point them at a house and they will pack up everything in it, and it will show up in boxes in the same rooms in the new house.
There are certainly more informal “movers” that are just “A guy with a truck” sort of deals. They will be much more informal in all respects, and you will have much more flex to negotiate. However, this will shift more responsibility onto you – you will need to buy boxes, pack yourself, and possibly help move furniture. And obviously, the farther you go, the more difficult it will be to get an informal mover.
Honestly, you may be making too much out of the risk here. Nobody wants some random person’s stuff. If you doubt that, then go watch some of the TV shows about people who buy random storage units at auction. Those guys are the best in the business at getting value from random personal possessions, and even they can’t get much for random stuff.