North Korea, Cuba, and China are just three examples of countries that own/control access to the world wide web, the theory these nations operate under is totalitarian, for them it is about the elimination of criticism of their particular regimes. The eastern countries among others mentioned that block porn are blocking much more, they are blocking the free exchange of ideas, Its called oppression.GB:
governments who control the net would pull it down if they ever thought they had actually lost control of it.
Blocking porn, can as you wrote, be done, it should be done but in most countries, the net is owned by private enterprise that are protected by obscenity laws, free speech laws, the vagueness doctrine just to mention three forms of protection and censorship. these are all determined locally, what may be deemed as material that should be blocked in community "A" might not be deemed as material that should be blocked in community "B".
The net genie is out of the bottle, it is not going away unless the entire system is eliminated, there are people who think this way, they are called anarcho-primitivist, they see the net and computational technology as the downfall of the human race.
In the 1990's U.S Navy researchers, U.S DOD researchers developed TOR, The Onion Router, this was designed for the purpose of transferring classified materials', TOR was soon released to the public domain, Now these Virtual Private Networks are used by over 400 million internet users world wide. In essence, what we have is a global black market. Have you heard of Silk road? Bit coin?, The deep/dark net. TOR and other similar router system/programs provide serious anonymity to those 400 million global users, some of whom have stock piled material that can easily be re-introduced after banned sites are shut down. In fact there have been many shut downs, the sites pop up soon after, with stronger protocols'.
The filtering and blocking will not remove that stock piled content and so long as there is a consumer base, there will be reappearances' because someone will get rich by providing banned material, as I said, the laws are local, Banning something in the U.S. doesn't ban it in Canada.
Your right, The sexual dysfunction needs to seriously be dealt with, the violence toward women as a result needs to be dealt with, future ramifications could only get worse, extreme violence is not out of the question. I wont blame parenting, but they are the front line censors'. Browsers such as Google have responsibilities also, but they will operate within the laws that regulate them, Some, but not all user's will operate regardless of their breaking content laws.
The nets design flaw, enables law breaking.
The mental health of children was in essence on the minds of the developers of the net, there just wasn't an anticipation or foresight of the negative ramifications, the future vision of the net was on purely positive themes, The mass exchange of ideas, Some people developed abusive motives instead.
Notice I haven't provided an answer to those mental health issues, its because I haven't got one.
Also, I'm not defending porn, As you've shown, porn is too pervasive and damaging and I agree with that assessment, I'm just trying to demonstrate part of the difficulties involved in censoring the net.
Wiki search the following;
The Onion Router
The Dark Net
Bit Coin
Silk Road
Obscenity laws
Pornography laws
You will see for your selves the powers we are up against.
