*BUZZER*

Incorrect. There are a number of reasons for them to do this.

The electricity prices they are charging are double what they pay.
They are still selling you a machine, through a very indirect and convoluted method, that you may not even want to retrieve at the end of your contract. They also can keep the asset on the books until this happens.
On the books, having GUARANTEED monthly income versus crypto income that can vary wildly from day to day is extremely important, especially for a company trying to forecast or go public.

There are other reasons as well, I just wanted to give a few to prevent the spread of misinformation. Remember, when you make a claim not based on facts (such as what I quoted), there is a chance someone else will read it and think it is a fact, when it is not. This type of misinformation is potentially dangerous and damaging to the community and industry as a whole.