Almost any business that sells information follows this model, e.g. the publishing and movie industries. You may have some idea of what you're going to get but you don't get full disclosure until after you've opened your wallet.

But I don't think that's what you meant. I think you meant, "In what other business do people get to take your money and then tell you the terms under which you can use the product?" I'll admit that that's a strange way to do business but the author of the article isn't even telling his customers the terms after they've got the product. He's just assuming that they're going to know and agree with his position.