The item generators weren't really sustainable. If you played enough of them, you'd eventually pretty much always get duplicates. After awhile when items would deflate, a lot of people would call the once extremely popular items, "crap" because of their comparative value. It seems that a lot of people started playing the bundles for the value of the items as opposed to the items themselves, and of course, as more people played the value would temporarily go down. Then Gaia would just inflate the items again with gold generators and rerelease them in item generators again, rinse, wash, and repeat.
That said, what I personally miss is when obtaining items was more integrated by participating on the site. That is fundamentally what we need, more item to site-participation interaction. I mean heck, paying $10 for 100 random items isn't really gratifying anymore. I don't like the idea of being reliant on other peoples' purchases for an item to temporarily deflate. I guess Gaia did for awhile because it padded their wallets.