I'm baffled that a house, which is insanely expensive for the average person, is sat unused.
Where I live it has become common for rich London people to buy themselves a holiday home here. It's a couple of hours from London, next to the sea and a popular holiday destination. I have a friend who's house next to him is empty for most of the year apart from a few weeks when the family drive down for a holiday.
It's not a super high price house, perhaps £300k, but in an area where houses are in short supply it's only driving prices higher for local people. I wish I had £300k sat around.
