"Having the used market is not beneficial to any of us."
Hang on a minute, who is the "us" in this statement, 'cause clearly he's not referring to the consumer. I get tired of statements like this because it seems that the logic applied by the pub/dev, is that anyone who bought the game second-hand would have obviously bought the game new. But I think this is hardly the case. The ability to resell a new game on the second hand market, enables the seller to take that money from the resell and put it right back into the publisher's pocket by purchasing a new game on day 1.
Never mind that publishers and developers who complain that other people are making money from their material are pretty much trying to ignore years and years of established copyright law and ownerships rights. Yes, no one would argue that they own the IP, just like an author of a published work own their text. However, you can transfer ownership of the material that it is printed or published on at the discretion of person who bought it (else how would retail store transfer ownership of the book or game to you in the first place).
Guess what Karl, or whatever developer or publisher is spouting off yet again, I don't buy your, 'Whoa is me! People aren't buying my game direct from me!'. If you want users to buy directly from you (via a retailer), then give me an incentive to do so. Drop your prices. Add in special content that is only available for first time buyers. That would make the used copy worth less, and increase incentives for buying the game on day 1.
Stop complaining about it, you're not being treated unfairly. It's part of doing business. Authors complained about it years ago and they lost, so get over it.