Are you omitting any key parties from your list of those responsible? Hint: who provided the legislation and public policy that consistently subsidised the property industry for the past 15 years.
Local Authorities failed miserably to build houses during the celtic tiger era as they did in the 1950s. But FF only got 30% at the last locals.
All governments subsidised property. FG, Labour, the Greens, FF gave mortgage interest relief.