Product is one of the important things in a project. With the product, of course, will make demand created. So from that the product in a project must be so that the project can grow again in the future. If the project without a product can be said, the project will be slow to develop and the project may die.
I partially agree here, because projects without a product can shoot much stronger. If this is a very promising and important project, then when it launches the product the growth impulse will be very strong and you can earn a lot!