[kartickv]

It seems that I didn't explain the model I have in mind: the washing machine would be installed in my house, and I pay them a monthly fee, which I can discontinue any time, at which point they'll come take away their washing machine.

In this model, I have the washing machine to use whenever I need it. If it breaks, or if I need a bigger capacity model, or I'm not happy with its performance, I can immediately switch to another supplier. Paying for the entire machine up front closes my options. They already have my money, so they can offer poor service and get away with it.