This is really the bottom line for this whole discussion as far as I'm concerned. To blame Oprah is ludicrous.
I watch the favorite things show. And I watch plenty of other tv and see lots of commercials. But I don't then run out and buy anything that I saw promoted on tv unless I feel it is something that I really need or, perhaps, really want and can comfortably afford without taking on any debt or otherwise impacting my overall financial situation.
Someone used a comparison to McDonald's commercials and I think that's a good analogy. I see plenty of food commercials but don't run out and eat those things because I know they are lousy for me.
I make a conscious decision to live below my means and I make a conscious decision to eat a healthy diet. If I did otherwise, the only one to blame would be me, not the advertisers, not the talk show hosts, not the retailers and not the restaurant owners.