Consider what you are arguing for. Get rid of free news sites with paid journalists, except for those funded some other way like the BBC or other state agencies. Many people will have to go back to getting news from ad supported TV channels or ad supported newspapers, so won't escape the ads anyway.
One of the reasons why newspapers are declining is the democratization of news. I think that's a good thing, it makes it harder to end up getting most of your news from a single (biased) source.
I hear what you're saying and I have considered it: the internet was just as useful to me back when ads were not everywhere as it is now. I *prefer* having sites where people who share a common interest gather and share the cost.
The difference between what I'm saying and what you're hearing is this: I see the internet as a fount of useful information and a place to gather with other like-minded people. You see the internet as a place to read the latest news.
With no ads and only user-supported sites/forums I can still learn all that I want to learn. I get my news on the radio anyway. The majority of stuff I do on the internet is linked to non-news, non-facebook, non-twitter, non-social-media, non-cat-videos, non-youtube stuff and non-buzzfeed crap.
The stuff I *do* use the internet for are related to forums around auto repair, guitar playing, metalwork, carpentry, building/construction, fiction-reading/writing, watercolor painting, electronic circuits, software-writing (OSS contributions), pencil/charcoal sketching, cooking, exercise, mechanical design (building a mill in my garage)... and a lot more that I probably will only remember at some later time when I don't need to.
(I have a lot of hobbies - very busy usually)
So you see, *my* internet will remain - those forums are mostly ad-free (and the people running them usually reveal how much they make off ads). If ads go away, it only takes a few tens of members chipping in a few cents a year to keep it going. Most forums have hundreds or thousands of members.
Like I said before, the internet was all fine and pretty useful before ads - it will be all fine and still pretty damn useful if ads were to go away :-)