Zoo York, Element, & Vans all have commercials.. They dont advertise their boards tho... they advertise for their clothing lines. so it doesn't count. it would be pointless to have commericals for skating, BMX and scootering because the majority of the world doesn't partake in any of them, so people watching it wouldn't even pay attention to it.
you can't mass advertise for something that's only done by a select group of people... take Road biking for example. millions of people race bicycles, and do cross country and all that sh!t, and its in the olympics and there's national touraments and all that good stuff.. but do you ever see a Bianchi commercial on TV? no. they advertise where their consumers are more likely to be looking... in Biking Magazines, Websites, and places like that. paying for a TV commercial for something specific like that isn't practical and wont draw the most results, which would result in a loss of money. companies have to pay for every single commercial thats played of theirs on TV. so advertising things like biking, scootering, and skateboarding in TV would result in a loss of money for the company doing it.