The default state for any blog is: abandoned. You've noticed this too, yes? Everyone knows of blogs full of good writing on interesting topics to which the author dedicated a substantial amount of time, right up until either life intervened or they did a serious calculation on the effort versus the payoff, and they stopped.
Imagine, though, what twenty years of dedicated online publishing would look like. We have no models to draw on in our visioning. Twenty years ago we barely had an Internet.