Selling Digital Games 2nd hand.. Why not?

[humanlaptop]

Im not asking to do it, just wondered why Steam dosent have this as a market... set a price for a 2nd hand game, user gets 50%, steam 25% and developer 25%

I bet games that have no interest in them would be picked up.. maybe you can only sell after 'x' years, but i have so much tat in my steam account its annoying. Maybe even recycle them in for Steam credit idk

Im assuming legally there is a block on this?

 

[humanlaptop]

Why would 2nd hand sold keys be any different to the many websites that sell cd keys for cheap? I've picked up a number of games through cd key resellers for £1 - £3 where the game was originally £20 - £50. Why does it matter if they sold me it or "Fred" on Steam?

Thats what im thinking, if anything it may remove those 'illegal' key sites.. idk.

For example say ive got Dayz.. Steam says (it has to be Steam controlled pricing so we dont get silly markets), this can be sold 2nd hand to another user for what £6, so me, Steam and Dayz get £2 each or something. And, my £2 has to be Steam credit which is then recycled back into the system anyway.

idk how it could all work, it just seems a shame that ive a library of games, that I wont touch and some people might want them.. and could get them from me for cheap, rather than not at all because they are too expensive for them.