Now that I think about it, I have a friend who at the time was probably the ideal Aaron's customer.
He was disabled and unable to work. Took over a year for him to be approved for Social Security Disability, meanwhile he was living in a Section 8 apartment. Credit was trashed. When he was approved for disability, that meant he got a lump sum for retroactive payment as well as ongoing monthly payments. He hoofed down to Aaron's and got a washer, dryer, TV, and laptop on rent-to-own. He had none of these things up until then.
Used the retro payment to catch up with overdue bills, and knew the monthly checks would cover his Aaron's payments. He simply wasn't going to wait months longer to have those things just to avoid paying more. I think after two years he owns them.
I wonder how Aaron's protects themselves from people renting expensive stuff and then selling the items to unsuspecting buyers and skipping town.