My neighbor had a paper route. I worked through the finances with her and when you figured in the wear and tear on her car she was losing more than she made. When she tried to get out of it, they threatened her with the contract she’d signed. Yes, they knew she’d lose money, no doubt. When the contract ended she quit. (Her route was mostly unpaved dirt roads in the country. Her car was worthless when she finished.)
They sign those contracts before they truly know what the job is!