A technicality perhaps? Like if say they buy $40k cars, depreciate it to $30k but earn $20k from rentals. Technically they got most of their money from selling

A technicality perhaps? Like if say they buy $40k cars, depreciate it to $30k but earn $20k from rentals. Technically they got most of their money from selling the car used but it still ultimately works only because they are able to rent it out for more than the depreciation cost.