You get a credit record (good, assuming you make the payments on time and you're motivated to do so) and you get a fairly painless way to save up for a down payment. You're still paying rent, but you're getting something for it.
I make money because I take the amount of cash that I've loaned you for a year's rent and invest it for profit. Also, the money that goes into the equity account for you gets similarly invested and we split the proceeds. I also make money if you end our arrangement without buying a house as you then forfeit the money that you've saved up for a down payment.