Microsoft has built their Xbox division through providing customers with a solid bang for their buck. No way in hell would they create such ill will in their own customer base by rejecting used games. Even a rumor that they'd do such a thing is completely and utterly retarded.

Two things.

One that graph represents only Europe, if you want a true representation of the 360's attach ration you need to add all countries, especially the US.

Second you don't seem to understand that an attach ratio is an average. Hence why many people buy less software than the attach ratio and conversely many buy more.

Attatch rate grow as consoles age because it's cumlative you see if the average gamer buys 1-3 game a year, then someone that brought a 360 in 2005 would have 7-21 games by 2012, an average gamer who brought the console in 2006 would have 6-18 etc add in the small minority of core gamers that buy 4+ games a year and you end up with the attach rate of ~10. If the majorty of gamers brought 5 games a year the attach rate would be closer to 20.

The UK is the country with the highest 360 attach rate BTW http://www.gamesthirst.com/2010/06/10/xbox-360-attach-rate-reigns-in-uk/

This means I'll have an extra-incentve to pirate games :)

yeah i believe this with 1-3 games for most. i would say some of my friends only buy used games and maybe one new game per year.

the worldwide attach-ratio is like ~10.  i don't know how old the average 360 is but 10 games on average for a console 6.5 years on the market is really not much. there are gamers like me who have an attach ratio of 80 or so (lol?) but the average buys maybe 3 per year. i don't believe that many buy more than 3 new games per year.

Edit:

just to talk about numbers, in 2011, we had 33 million xbox 360's at the end of the year and 26 at the beginning in usa and they sold 88 million xbox 360 games which means almost 3 per console. in europe, 20 million at the end and 16 million 360's at the beginning and 42.5 sold games which means an average of 2.5 or so...(and for example there is kinect adventures included)

I assumed that graph was total sales not annual

Also the point you made about aging consoles doesn't really pertain to the 360 since it has continued to sell more  with each passing year. Hence it is not acting like an aging console and continually adding new users to the market that have few games and offset the older users. You also can not forget that the used library of a console grows significantly as it ages, giving new users less incentive to buy new.

Therefore while there are plenty of people that only buy one game a year there is also a vast population that buy more. Implementing a console that does not allow used games would take those people that do buy larger amounts of video games and significantly reduce their expenditure.

There is no point in arguing though, unless the next xbox is dd I highly doubt it will have such a stupid feature implemented.

Essentially, yes. Just about every full retail price PC game you buy is just an installation disc packaged in a DVD case that may or may not come with any documentation.

Some still use CD keys, which just means the DVD has to be in the DVD tray as a physical check, without actually using the disc to access game resources. Some don't and include a one time use license registration code or just require being logged on or both. DD seems to be the distribution method of choice which explains why PC games have little to no presence in retail outlets.

After dealing with PC games that have limited installations, DD is just easier than dealing with retail copies. Having to take a game off the shelf and put the disc in the tray even though it's fully installed on HDD seems pointless. 

Whether or not this is actually in cards for MS with the next Xbox is pretty debatable although I can see a potential scenario in which buying a retail copy of a game adds the license to the user's XBL account, allowing them to do a full installation on the HDD of any console with that user's XBL account installed on it.

In other words, it would work just like Steam.

If MS wanted to take things a step further, the license purchased and registered to the user's XBL account would also give them access to download that game from XBL (assuming it was available on XBL), allowing that user to play that game on any console with their XBL account, without even having access to the retail disc they bought and registered.

I don't have a problem with that. In fact, I'd prefer it.

I would however, have a pretty serious problem if any Xbox game I bought was tied to an individual console though, given the life expectancy of console hardware.

I don't sell used games and the extremely rare occasion in which I even consider buying one is for the simple reason that the game is out of print and no longer available at retail. I'd rather have a new unused, unstepped on copy, and given the fact that really dated games rarely go for even $20 (usually it's a lot less) I don't really care if I can pick up a copy that's in pretty gross condition for a few bucks less.

depends where you live you know? americans aren't pc gamers so you don't have them so much but here in germany for example you have a bigger pc area in the shops than xbox 360 for example. you aren't in pc gaming as we europeans and especially germans are. i believe brits aren't in that as well they are always like usa in everything  :)

but sure dd is huge for pc but there are still many pc games in the stores.

Without have ANY information to back this up, I'm willing to bet that the market for PC gaming in the US is far larger than the market for PC gaming in Germany and probably all of Europe as well. 

It's really just an issue of how the software as well as the hardware is distributed. In the US, I'd venture to say that the vast majority of PC games is now DD over retail.

While it's probably because I'm such a big Steam convert that the idea of buying PC games at a retail outlet seems almost quaint, Valve's ever growing margins probably aren't coincidentally tied to the shrinking visability of retail PC games. When EA tries to get on board with Origin, Valve's success with Steam looks a lot less like an anomaly and more like a growing trend in the market.