Is this link all there is? This is not a scholarly article. It contains one fact - "Even in the 1700s large price swings were recorded. So boom and bust Irish-style is a 300-year-old habit." The rest is just opinion.
Sums up the Irish market for me. A near pathological fear of repossessions even for people who obviously can't afford the repayments. There's your problem right there. Solution: repossessions, but that's not happening, although I believe the Troika are trying to fix the block.
The number of repossessions and voluntary surrenders has increased but is still at a comparative trickle. I suspect the banks are still desperately trying to avoid crystallising losses.