Hmmm, well I think people are being too reactionary without enough information. People don't generally place blame like this after an attack like this one, without reason.
People decrying the blame being placed on video games aren't putting much effort into thinking about how a gaming community could be involved in this, which is pretty easy to see.
To be honest at times like this people tend to forget that there is a lot of real money involved in games right now, virtual items with real cash values are being bought and traded, and people have ebayed things for games like "Diablo" for huge piles of money. Then there are EVE Plex stockpiles, Second Life property developments, and other things. Not to mention the big business of selling game currency for real money. Organized crime, including syndicates on an international level, have gotten involved in things like gold farming, and using video game currencies and exchanges to pass real money around.
There have been plenty of incidents of real violence over video games through the years, with people attacking each other at cons, people hunting each other down over scams, and other assorted things. You hear about them once in a while, but it's generally not a big deal, and nothing close to being on this level. That said, gaming has been becoming bigger, and it's a matter of time.
People will perform drive bys, bombings like this, etc... in the ghetto over a few hundred dollars, turf concerns, or even just selling drugs on the wrong street corner.
I could see a number of situations where some kid could be playing a game where making real money gets involved, and he costs someone a lot of dough, or scams the wrong people, and has to deal with retaliation. Like it or not when you set out to make an example, you generally don't just go after the person involved, attacking the family/loved ones is done because it makes other people seeing it afraid of what could happen to them. People tend to be a lot braver with themselves, than their families. Threatening to kill some guy might not be as persuasive as say threatening to kill his kids, rape his daughter, or whatever. I could see enough people being aware of a situation like this where lobbing pipe bombs into a family home would be a powerful message, especially if the people doing the lobbing aren't the ones who are going to be calling the shots (so catching them doesn't matter, the guy giving the orders has made the point he can just have someone else do the same thing to those who cross him).
If this kid was involved in a domestic gold farming operation and skimmed and/or did personal sales on the side, stole a bunch of Plexs (for sale or otherwise), scammed someone out of property for real money, or even just cost someone an account for one of the bigger Korean games with thousands of dollars invested in it, I could see this happening. People have killed for less.
I'll also say that I expect things to get far, far, worse than this. Believe it or not I saw this kind of thing developing years ago when we started to see all of these microtransactions and FTP games, and the development of a class of people who were making real money off of these games (other than tournament prizes). Once that happened it became a business, and one outside of the general channels of regulation.
Honestly, I think it will only be a matter of time before we start seeing murders over this kind of thing becoming increasingly common (with increasing amounts of money involved), various guilds and online syndicates becoming the equivilent of street gangs, especially multi-game player associations with a leadership interested in the financial aspects (since you already see people setting up what amount to pyramid schemes that amounts to a lot of virtual property... and sales, going to higher up in guilds. With people doing this accross a number of games... it can really add up). I also feel it's inevitable we're going to see a high end game manager or two killed within a couple of years. At some point the guys running these things are going to ban the wrong person. The guys running the financial schemes in these games tend not to be the nicest guys in the world, and are in many cases violating game policy or cheating in one way or another. At some point a guy making thousands and thousands of dollars is going to be banned, lose his money and a revenue stream from one game, while having others bring it in and decide to make an example out of the mod/manager/company that did it. It sounds insane now, but give it time, when real money gets involved, and games become a tool for making money, they cease to really be games anymore.
Maybe I'm wrong and the victims here are off kilter, but I almost guarantee if we hear more about this, the guy and his family were probably targeted due to the kid having cost the wrong people money in some kind of online gaming business.
I'll also say this might have been a warning, as dramatic as it is. Pipe Bombs aren't the best weapon for what's being done here. Anyone who could have made the pipe bombs probably could have made firebombs (your basic molotov, or more advanced) and burned the house down
on them while they were asleep. That means this is probably intimidation (which goes along with my theory) and an effort to probably get money back. Anyone who got that far probably could have killed everyone in the house if that was their actual intention. Me, I would have sealed the front and back door at night, in the dark (a few ways to do it quietly) and then lit the place on fire, if I was so inclined, which I'm not (obviously). Looking at the possibilities and what could have happened.... it probably wasn't an attempted murder.