[mrweasel]

They aren't, more or less. Rules might be interpreted differently in different countries, but I think it mostly correct.

What you can do is create something like Paw Patrol. The show is a product in its own right, but really it's a massive ad for their line of toys. You can also get catalogs from toy stores, I don't know if they are allowed to mail them out, or if they don't do it because of cost.