I actually agree with EA on this. It used to be that I'd finished every game I owned. Now, with steam sales, I have games I haven't got round to playing yet, that I bought months ago. Sure, I only dropped £5 on them, and I will play them, but at the same time... And with frequent, deep-discounted sales, it's difficult NOT to buy titles I'm vaguely interested in, so having games I haven't played doesn't stop me buying more.
It also cheapens intellectual property in the sense that unless the game is damn good, I probably won't play it too much, because I have other games I could play. It's only when a game is great that it holds my attention. Which is a shame, because I used to have fun playing those that were not so great, but still serviceable. I guess it's a phenomenon where, having spent less money on games, I'm less invested in them. Which probably leads to less of a fanboy outlook, and more of a blase attitude.
For example, I played Stalker: Clear Sky, recently, having picked it up for £3. I loved Shadow of Chernobyl, and played it to death, and I've also completed whatever the newer one is called. But I didn't come close to completing Clear Sky - bad design decision after bad design decision kept getting in my way, and after a point I just thought "No". That would not have happened if I'd paid £20 for it...
Having said that, I think the actual effect is that developers will only be able to get away with making bad games for a shorter period of time, which is probably what EA is afraid of. Furthermore, EA sells games for terrible prices (as does Steam, when stuff is no on sale), so I'm going to keep waiting for those deep discount sales, until a happy medium is struck.