Since 2000, I've observed the internet shift from free sharing of information to aggressive monetization of every piece of knowledge. So I suspect that is the culprit. If you use the mobile web on the latest iPhone you'll find its unusable without an ad-blocker.
The internet has grown, and the free sharing is still going strong. Have a look at Wikipedia, Hacker News, Arxiv.org.
To be honest, the stuff that was shared freely in 2000 was not all that great, and most of that which was, is still available. Remember that you had to buy a subscription to Encyclopaedia Britannica back then, and to all the academic journals.
Granted, there are some non-free information silos, but generally I'm pretty happy with the procrastination advice on Reddit being surrounded by annoying ads that drive me away.