Why can't they auto-block RMT posts?

[NessaWyvern]

Seems that my main activity is reporting RMT spam when in main cities, and I constantly see the SAME text in them all the time, like "Gil & Eukera level & Gear 390"

Seems to me that Sq Enix could write software to monitor player reports, and once ten reports have been submitted on ads that contain the same text, start blocking all that contain that text.
Yes, the spammers will just change the text by one character, but they'll have to identify what part is triggering the block to change it, and eventually, they may run out of ways to get their message across.

Considering how some RMT spam is garbled and saying stuff like |3uy G1L, I think maybe they do have some kind of auto-block or ban in place and do this to not get detected.

That being said, gil would only be sold if someone bought it. If nobody was buying gil, then the bots would eventually go away to a different game for money. Maybe we need big warnings when someone creates an account saying "Do not participate in RMT or get banned instantly!" (considering if buyers get banned after they buy gil, the gil sellers still make the money, you have to discourage people from buying in the first place), try to fight the problem on both sides.