Conceptually, it seems similar to a royalty. I give you money to be a part of something, and collect a royalty into perpetuity. Or, it's even more like buying

Conceptually, it seems similar to a royalty. I give you money to be a part of something, and collect a royalty into perpetuity. Or, it's even more like buying land under a building. I sell the land under my building to get some quick cash. And in turn agree to lease the land back from the new owner permanently. Depending on how badly I need the money, it may be my best and only choice...