Well, they could just make stuff have a drop rate of 0% as well as having long lock out times. Players like you need to understand that there is literally no way for Square-Enix, or any developer for that matter, to be able to provide content at the rate faster than you can burn through it. There'll always be some kind of limit put in place in order for you to be gated into getting the stuff (see Mythology tomes). It's super cool and all that you can breeze through this content so quickly, but you have nobody to blame but yourself when you've run out of things to do.