There was lack of enough marketing and sales, mostly concentrated on technology.
I think the same. At the ICO success euphoria team made a platform. But founders didn't think more than 2 years. Or I didn't exclude that plan has been changed due to development. Because of at early stages (I can say about it as early investor) ideas were wide and giant.why nobody uses it, because their product ha no benefit or because there is already a similiar product and what they have is not better than existing
Because it's not so simple today. To use platform resources user must have a quite high level in programming and IT. At first. And too small advertisement. At second. This platform is a wide-known in the close communities 
True, that s why they ve made Rays as simple to use interface. One of the directions is advertising about options for creating such layers as Rays.