I'm going to say something I'm absolutely not sure about and can be completely wrong but I wouldn't be surprised if these billionaires get some kind of financial advantages for donating that money (tax reduction perhaps?).
Up to 90% in this case.
If someone "gives", for say 100,000 € to ND, and happens to have enough income that year to pay that much of money in income tax, 90,000 € will be instantly returned:
-> the states gives 90,000.
-> the donator gives 10,000.
This is more than proof enough that the French are not content with the way things are going in France. And this is not the only protest I have seen in the last year.
https://en.wikipedia.org/wiki/Yellow_vests_movement
Some French. There's a media distortion at work here, due to the violence. Every Saturday, the news channels are live all the day on this, filming a few thousand people with titles like "No violence yet in Paris" until something happens. Without this attention, those people would be back to their life for months. Polls shows that political lines didn't move.
I read the "sell it back to the Church" call and can't avoid finding it funny. Atheism never quite really knows what to do with temples, if they belong to a church they want it for the people if it belongs to the people they want it back to the church.
These temple were public from the start, then came the separation of state and church, with the pope blocking the transfert of the properties to the church. The intent of 1905 government was to get rid of this, but had to keep it.
This is pretty embarrassing for France. They can't afford to maintain their historical monuments? Calling for help from private donors to keep their history preserved? If they can't afford to maintain it, they should sell it.
Thing is France is littered with cultural and human made legacy, as old as 17,000 years old painted caves to 20th century buildings, fueled in between by Frank, Roman, German, Viking, Saracen or Celtic cultures, having got partial governing of this lands at a point in time. That legacy, which brings load of tourists, is also a burden when it comes to keep that human heritage safe.
yes, even this cost money: the whole cave has been replicated next to the original, as visitors breath was deteriorating the paintings.