I personally don't think the AH was the problem so much as other design decisions relating to gear that pushed the AH to become more integral than it needed to be.
The way they made the gear and the stats, there was very little variety in what people needed. And because of the way they designed the skill system, all gear gave you was more damage or more survivability. There was nothing about the gear that could define a new build.
Thus people primarily wanted the gear to clear the content, but they designed inferno to be a huge cockblock. Partly because of the above and partly because of how they designed the gear level vs. monster level drop formula, you could either farm Act 3/4 Hell endlessly in hopes of getting perfect rolls and none of the really good stuff (sets, recipes or legendaries) or farm inferno with substandard gear and likely die incessantly because you ran into a BS set of monster affixes that just owned you.
OR you could buy the gear off the AH that gave you a reasonable chance of beating inferno.
The gear just wasn't compelling so the only reason people wanted it was to clear the content, but clearing the content was hard until you got the gear which meant it was simply easier to buy the gear off the AH (for most people). I mean, it should have been a major red flag when all of the popular farming points in game for the first couple of months (until they nerfed them) were locations where people could spawn a chest with as little fighting as possible.
The way they made the gear and the stats, there was very little variety in what people needed. And because of the way they designed the skill system, all gear gave you was more damage or more survivability. There was nothing about the gear that could define a new build.
Thus people primarily wanted the gear to clear the content, but they designed inferno to be a huge cockblock. Partly because of the above and partly because of how they designed the gear level vs. monster level drop formula, you could either farm Act 3/4 Hell endlessly in hopes of getting perfect rolls and none of the really good stuff (sets, recipes or legendaries) or farm inferno with substandard gear and likely die incessantly because you ran into a BS set of monster affixes that just owned you.
OR you could buy the gear off the AH that gave you a reasonable chance of beating inferno.
The gear just wasn't compelling so the only reason people wanted it was to clear the content, but clearing the content was hard until you got the gear which meant it was simply easier to buy the gear off the AH (for most people). I mean, it should have been a major red flag when all of the popular farming points in game for the first couple of months (until they nerfed them) were locations where people could spawn a chest with as little fighting as possible.