Yes, it is clear. But the difficulty is precisely in the definition of these projects. Theoretically, almost all projects are created in such a way that there is a demand for these assets. In fact, we only have a speculation.
Sometimes it is very difficult to distinguish a really useful project from a momentary hype, especially if the hype has a powerful and professional advertising.
It is not surprising that projects are created on an idea that will have demand, otherwise investors and users will not be interested in it, everyone needs useful projects. High hopes are placed on advertising, while forgetting about development.