They financed the maintenance of the aircraft by having people to fly with them sometimes for money. The government decided to change the rules, making this a commercial activity which forced them to pay a lot of tax over what they earn. Pleas to the government to make an exception fell to deaf ears. The government here is not interested in history. As this was just a group of volunteers, they could not afford the maintenance of the aircraft anymore. Apart from that, they had some bad luck, had a collapsed gear some time ago. We all tried to help, donating money, but it was not enough.
I can only hope that in the US, they treat the old lady as good as this group of passionated volunteers in Lelystad.