Too hard to say without much more information. What type of vehicle, too much time off, over financed truck, truck with no generator, excessive deadhead, running for a budget carrier, lack of freight, and the list goes on.
The fleet owner may need it for a variety of those reasons including greed.
But the reality is many banked on a certain level of income years ago running for some of these budget carriers and their well is drying up. They are reliant on the larger carriers for overflow and they aren't getting it. Or they try to compete on loads from the price point, but then fail to have the coverage or insurance to run them. They will find loads, but the deadhead will be longer, the rates lower, and extended wait times between loads.
The thing about most companies is the driver knows the loads and the price. Find out what the ACTUAL cost is to run the truck (fleet owners) expenses, and you will be much closer to your answer.
With my teams there is no "secret" as to what revenue I generate from their truck. They have all the information right in front of them.