No, users have no idea how many or what kind of ads are going to be on a website before they get there, and some content has ads, others don't. Just a few examples are pre-roll ads on YouTube videos (some have them, some don't, it's not a choice), news articles with ads mid-paragraph, or sliced up into slideshows with ads to continue consuming or receive any content. You may not personally understand how insidious ads can be, but 450 Hacker News readers do. I didn't even cover the issues with tracking, privacy and potential malware.