Re: house prices
Yes, but don't those facts counteract your previous point that house prices have always been expensive relative to interest rates and incomes?
Someone I know bought a nice house in South Dublin for £30,000 in 1988. That person (a young professional) was earning £20,000 pa at the time. They paid 1.5 times their salary for their house - a bargain in anyone's book. (Nowadays you would need to be earning at least €300,000 pa to be able to afford to buy this house on similar terms.)
ps Interest rates on savings were higher in those days than now - but remember also that even then the returns on deposits were not particularly attractive because of the effects of inflation. Any Irish people who invested sums on long-term deposit 10 or 15 years ago have actually experienced very poor returns once inflation is taken into account.
You won't find too many people in Ireland who became rich from interest earned on savings. A lot of people have (even unwittingly) become rich in Ireland through owning property - the reason: they bought property cheap and sold when it became expensive.