No, it was done to remove ISK from the economy. You’re not going to stop the people who have tons of money AND massive piles of PLEX from setting the price unless you absolutely break supply and demand and set an artificial price-point from NPCs. Which CCP won’t do, because the whole point of PLEX is that players buy them from CCP, and then sell them to other players for ISK, and those other players use them for game time, SKINs, etc.
When you look at all those different sell orders? Dozens of them, hundreds of them, each with a few thousand PLEX, all trying to 0.01 ISK one another? That’s a very small group of people, 0.01 ISKing their own orders. As an example, all the PLEX orders (buy and sell) that went up each time the ‘I CHOOSE YOU’ guy put down another market citadel? Those were all him. Same guy that owned the market they were being traded on. Eat the fees to keep the prices profitable.
They hold the volume, they create the demand w/buy orders. Sell below their price, they snap up your PLEX and relist them. If you’re not willing to completely destroy EVE’s economy, you won’t change that. And by ‘destroy’, I don’t mean ‘bleed assets out of it’ or ‘use scarcity’. I mean ‘buy everything from NPC vendors, sell everything to NPC vendors’.
And even then, player-to-player transactions will still follow simple supply-and-demand rules. That’s how economic activity works.