It's important to note that you the invetor are still in there somewhere. It's also important to note that the Government doesn't want to hold the Bank for longer than it needs.
The Bank will be put back out there when it's right for the National interest and right for the Bank. AIB won't be Nationalized forever.
Notice how the American Government are now drip feeding shares of Citigroup back out to the market. Irish Banks will get the same treatment eventually. Somewhere down the line; the Government will want payback.