Partly it’s a long distance thing, especially at the lower end of the market.

Imagine you want to move your possessions to somewhere that’s three days drive away. Generally speaking, you need a team in location a to pack, a driver, and a team in location B to unpack.

In practice that’s hard for companies to offer entirely in house, so it winds up being subcontracted out, and then you have the problems you expect.

If you’re moving a couple of hours down the road, this doesn’t apply, it’s easy to find local movers who will load, drive, unload with a single crew.