Commercial breaks are a special case. They prevent you from consuming the content until they end. Which is obviously not a great user experience (Although people do need to go make a cup of tea or have a toilet break).

Online and print advertising doesn't prevent consumption of content, or stop the user going about his business for 5 minutes.

Still disagree. I'm tech 'savvy', but I don't put myself in the HN crowd. I'm a consumer. I love advertising. I love buying stuff. I'm what I consider to be in the 'mainstream'. I can avoid ads, but I choose not to.