Then what happens when the landlord goes to collect the money and sees the box is empty?
The landlord will believe that washing machines are not profitable (usually they are placed on a revenue-share basis) for anybody, and see they are frequently damaged.
Result: no more washing machines.
Boo hoo.
> Result: no more washing machines
That assumes the leases don't mention that laundry is provided. If the landlord takes the laundry amenity away and residents need to go to a laundromat, now not only is the landlord making no money, they're probably going to lose lots of leases as people move to places that have laundry on site.
This is biting your nose to spite your face.