wait I did say service not product.... you pay for a service here to use apps, MP, cross game chat, rewards plan, exclusive discount and content..... (arguably worth it but that's not the debate here)
you don't buy a product.... when you do even on XB you don't get ads, if I buy a movie or music on XBL I don't get ads if I buy a game same goes....
pretty much like your TV example.... if you pay for cable TV you still get ads but if you buy a product like a TV show DVD or DD copy you don't get ads..... it's pretty much the same here....
now I know how it is in the US since I lived there for a decade almost and I'm back in France now... so I know exactly what you are talking about.... but paying services here or there has never implied ad free unless the premium account is expressively made for that.... I say that cause I use to work in the marketing/advertising field and if that was true we would have way less business lol....
but anyway, I don't see what will be new with Xbox 1 so far it looks like it will be exactly as it is just in a different dashboard, and even maybe better with better tailored game, movie, or music list proposition and maybe the little ad we have in the corner will finally be more relevant to us....
but so far I haven't seen anything telling me it will be any different than what is already in place with the 360.... just a different skin....
