This is a misconception of how our industry works. Yes there are market resesearches with users but often those come after the problem space has been defined. Most of you see in the tech sector today are "Created Needs" by imagining a solution that the users didn't even know they needed. To ask a question you first need to define a problem that is defined by that/those questions. This is the difficult part and the main reason why People still believe "the Idea is the most important factor". Ofcourse this is not true, there are hundreds of factors that come into play. Imagine an AI asking circa 2000 to the users what kind of virtual social space did they need. The answer would not have been Facebook. (There were other social networks before Facebook but the time was not right for the "Social" explosion). By learning on existing solutions, The AI would have learned it's lesson that global virtual Social networking is not something that the users want. And part of this problem was as much sociological/psychological and outside of the realm of what the AI could consider that we would not have what we have today.

Not that we would have missed much from missing the particular implementation of this idea that Facebook gave us but the idea and what it unleashed is much more than that particular implementation.

Sure, people don't know what they want. But the point is there won't be a need for some intermediary person between AI and the end user.

Whatever the AI prompter brings to the table will quickly be provided by the AI itself. If a user doesn't really know what they want, there isn't a scenario where the AI prompter will suss it out but the AI itself won't