I have just found this:
Very large post, The next part is interesting:
Is there any plans to intervene in the price of PLEX?
There are no plans to do so that this stage, but the EVE Economic Council is watching the situation closely. If they feel there’s need to intervene, then we’ll look at how to do so.
If you look at it at the core then it’s more the price of ISK which is falling, rather than PLEX rising. The ease of which segments of EVE Players are able to generate new ISK into the economy, often without any risk or exposure to other players interfering is the crusp of the issue IMHO.
Do not know if this is already linked in this tread.