Why would anyone using a demo page be under the illusion that they would be able to save their data? To wit: It's a demo page. I agree with the above sentimen

Why would anyone using a demo page be under the illusion that they would be able to save their data? To wit: It's a demo page. I agree with the above sentiment that not offering a means of trying the product out before registering is a blocker for many, many people( myself included ).