Some projects have products but very few are working. PundiX has the POS product which has been showcased in a few scenarios as usable. Steemit has a working product which is the steemit blog for publishing articles. Just to mention a few, but there are other projects with cool products although not yet adopted.
if the project has real products, it will be easier to advertise it, right? because many people will know more about the product so people will be more interested if the product is in accordance with consumers.
but not always the project that has the product is good because it depends on the product.