One of the beauty of the ad model is that it influenced the vast majority of people to publish information in a way that did not require accounts, authentication, or any kind of barriers.
It meant things like crawlers and search engines could exist and scale to the entire Web, without having to make millions of indexing deals or paying micropayments just to index content. It means archive.org and wayback machine can exist.
It meant people could click on a link transaction free.
Though it may displease the people working in the news business, I for one, want to keep the Web as transaction free as possible.
The mobile world of app stores, install apps, and constant freemium nags to buy DLC I hope does not move to the web.
On the downside, some deep pocketed businesses subsidize everyone else's content consumption in exchange for some of their attention. It's a worthy trade for many people. I grew up poor, my parents didn't even have credit cards, we didn't pay for tv, and I had to sell my comic collection just to buy my first computer.
Being able to consume the world's information, ad supported, or charity supported, would be a far better model for my inner city neighborhood of youth than micropayment paywall madness.