Earlier quoted context omitted.
That's the beauty of it, they don't even have to hand money back to the user. The trick is to make the user perceive value in whatever digital artifact their are providing. In the eye of the user it then becomes the same as money. Make the user invest their time into the game. Time is money right? Create fake rewards for arbitrary actions. Then when they are properly hooked, ramp up the difficulty level to a limit wh…
This is sort of like what advertising does to people in real life.
An ad convincing me to try X energy drink at least results in me getting an energy drink.
Games like this are selling you on a worthless digital item.