Originally Posted by Fluent 
I'm pretty sure they're not going to change the drop rate. I imagine they purposely did it that way in order to encourage auction house use. Instead of picking up magical items all the time you pick up gold and buy the magical items you want.
They already have. Multiple times.
The Evil-AH-Conspiracy theories are silly. Is the AH good or bad for the game? A little of both, maybe. Was it a grand conspiracy on Blizzard's part to make money/ruin the game/monetize with DLC later/whatever crazy idea? Nope.