I personally hate the rental car companies in Ireland. As background, in 2016 we paid $149 for two weeks, in 2019, we paid $328 for two weeks, and in 2023 we paid maybe $750 for three weeks.
First, especially since Covid, they have gouged the market for the daily rate. I know there was a car shortage for awhile, but those absurd rates have only come down a little. It was more expensive to have a car than a B&B room!
Second, they charge E10 or so for a second driver, even though the second driver probably drives half the time. Third, they charge you a fee to allow you to use your credit card CDW coverage, or if you use their coverage, it doubles the rate. Then, they don't provide the car you thought you had, but supply "or similar" which is always smaller or has less legroom or luggage space. Sometimes, you get an upgrade because they at least honor the reservation to provide "something".
If anyone thinks it would be non-stupid to buy an Irish car, find a place to store it, and use it as a "time-share", we'd be interested. Irish car insurance is low by US standards, and the MOT would require one user to do a little work. Long term parking could be challenging although maybe someone has a vacation home close to public transport? Our friends have considered buying a house and a car just to avoid the rental headaches. If we gathered more friends to join in the effort, it might make sense?
Anyway, either reply or PM me if you share my feelings!