My FIL has two houses, both with 3-4 bedrooms, much larger than he needs, empty a lot of the time, both needing a lot of maintenance and upkeep. He lives alone.
We have tried to encourage him to move into a smaller place with facilities for the elderly near one or other of his sons, but instead he insists of staying put as he can't be bothered to organise his possessions and he doesn't want us to do it for him because it's 'hassle'. In the meantime, we are really getting quite stressed running him to medical appointments, being there when he has a fall, trying to organise home repairs at a distance and so on. His 'hassle' has effectively become our 'hassle', only we are not retired, have full time jobs and several children to worry about as well, not to mention our own house and a number of other elderly relatives without their own children to support them, also in similar situations. Added to which he is bloody miserable living alone, which he rather takes out on us sometimes. I can guarantee that two or three times a week I finally try to sit down to my hot dinner when the phone goes with an 'I'm so lonely, I just wanted to hear a voice' call, to which my response is along the lines of 'Well it's been a couple of weeks since we saw you, would you like to come to stay for a while' only to meet with a response such as 'Well the meter reader might come this week so I had better not leave the house'. That kind of thing.
This is the reality - without an example being set, or positive roles being put in place so that elderly people are persuaded that it can be in their interests to move into a smaller, more convenient and more pleasant living situation, then the situation is rather stuck. Families remain squashed and the elderly remain lonely and inadequately cared for in many cases, despite everyone's best efforts. Not only should they have financial incentives to live in smaller homes, for example by fiddling with the Council Tax system a little, but they should also receive practical assistance in making a move, if they feel they would benefit.