What if you're a coder who has no interest in any of those things? Many people get into SaaS specifically so they don't have to work with bureaucracies any more.
Book publishing can sometimes be alternative, but what if your code is so intuitive and easy to understand that no one needs a book about it? Or what if you're a bad communicator and someone else writes a much better book?
This has essentially happened already. Comedy central censors South Park in a direct response to threats made against them regarding depictions of Mohammed.
Is there any reason to believe the modern day incarnations are more sustainable then their dot-com counterparts? It certainly feels that way but the article is very light on evidence.
Since you have traffic, you could work on monetizing in other ways than adsense. Think of a product that visitors might be interested in and try to sell them that.
It seems like they're using cursor tracking to validate human-ness. Assuming thats the case: Since the cursor is outside of javascript's control, it would force the attacker one level higher (to the browser/os, instead of the dom). Not impossible, but still a significant barrier.
I think a better way to look at it is "information addiction" or "social snooping addiction". "Internet addiction" is a silly concept, because the internet is merely the medium. Its like referring to gambling addiction as "casino addiction".
What kind of marketing did you do? It seems like a pretty reasonable idea but I can imagine it would require a heavy investment to get a sustaining userbase.
Book publishing can sometimes be alternative, but what if your code is so intuitive and easy to understand that no one needs a book about it? Or what if you're a bad communicator and someone else writes a much better book?