There are some games in today's world that will just never die. The PS2 had the biggest library of (what I call) the second generation (of the "gaming war", starting with N64, PS1 and dreamcast, then Xbox PS2 and gamecube etc).
At any rate: There's some good and bad things about picking out the gems from a past age for the cheap. Games like Shadow of the colossus, ICO, God of War 1, FFX, even the Orange Box.
These are games that will never be remade (most likely) and are the games that will (have, kinda) go down in history.
While what I say now might not be directly related to the article, I think it's something important that we as people who play games should remember:
Not only is gaming a past time, and having fun, but like a good movie, we have to remember the classics and the roots. People will always remember star wars, just like people (at least in the gaming world) will always remember games like Portal or other big milestones.
The fact that we can get these games cheaper now (some of them at least, Halo for the mac is now around $130 on amazon) is a good thing, since these classics can reach a wider audience at a lower price.
As someone who can only afford one system per generation, I stuck with a gamecube and missed out on most of the titles I mentioned above.
Since my girlfriend has a PS2 I can now play and enjoy these titles that I hear so many great things about. Unlike movies, system exclusives are proprietary so in order to experience all the great gems, you have to have all the systems. (I.E. I don't own a 360 and there are more good games for PS3/360 than... the Wii I own)
Point: The fact that gems can be found cheaper is a good thing, just gotta know which ones you're buying, and if they never come out as DLC, better grab 'em quick or else you'll never get your hands on it.