I know a couple of hardworking guys who do rather well with dually pickups and 3 car trailers. One works off the load boards and stays regional in the NE and MW. Same truck and trailer as when I met him over 10 years ago. The other is leased to a carrier and hauls out of a railyard to mostly local dealers hauling new cars. Both seem content with what they do and have been at it for a long time. This is car hauling, not rocket science.