Wait, what? I'm confused. Is the entire product catalogue considered an ad? Or do you mean parts of a product catalogue can contain adverts? I'd argue a product catalogue is not advertising at all.
I'm a huge buff for music gear/tech. I love seeing the newest plugins, pedals, software. I actively seek it out. I know demos of products are effectively advertisements, but they are the right type of ads and aimed at a crowd that seeks info the right way and likely is a higher probability of making a purchase.