Firstly, F@$% you, Mr. DeMartini.
Secondly, my experience is that allowing a top-down control of prices leads to an unrealistic over-valuing of the properties. This is doubly the case in the matter of the digital world, where innovation moves quickly and five or six months brings an entirely new wave of software, leaving the hot titles of yesterday in the dustbin. Far from devaluing older titles, reduced prices on older titles like those seen in Steam sales may be the only thing that allows the franchise-only thinking of big names like EA and Activision to have some degree of success, giving otherwise leery gamers reason to try titles within their limited budget and perhaps see that there's some merit to those games beyond the ridiculous hype that goes hand in hand with initial releases.
By way of contrast, I've noted that all the GameStops in my area seem to insist on pricing all their Mario-related used DS games at around the $25 mark, probably in part because they still insist on selling the new versions at the $30 mark. This may in part be because of pressure from the big N... but it also means I've seen five or six copies of some of these games collecting dust, unsold, behind the counter. I would happily buy some of these games if they were allowed to naturally devalue like all the other games on the shelf (Super Mario 64 DS is now seven years old), but at the $25 point I can buy two or three other perfectly good games, so what are the chances I'm going to shell out for Mario instead?
Gee, news flash... Companies like bigwig EA love market dynamics right up until they bite them in the ass.
Which brings me to:
Thirdly, Steam is not going to go away, so you've just announced to the world that your biggest competitor's strongest point is going to remain their strongest point, you yield all ground on that issue. In return for which, you're offering...
(*crickets*)
I'm a little surprised your stockholders aren't ready to tear you a new one for this.
Basically, you're banking everything on the colossally arrogant assumption that EA's games are so good, they're worth every damn thing you've put your customers through to play them. Apparently, someone hasn't been reading the news.
Fourthly, F@$% you, Mr. DeMartini.