We don't see the amounts raised in the media. Nor what Charities actually do with their monies. Have a look-see at the various Charity web-sites to see how they spend their monies.
Also, it should be remembered that the charity fund raiser for 'today' is covered, but publicity draws attention to the 'now' which encourages people to donate. Therefore there's a buffer for the next disaster.
This is in the face right now but when the next disaster arrives, Notre Dame will be forgotten ;-)
In the UK News this week:
Restoration work has started on a 13th Century monument to a medieval queen that was "falling apart".
The Eleanor Cross on London Road, Northampton, was built in 1291 for Queen Eleanor, the wife of King Edward I, but needs urgent masonry repairs.
The £95,000 work by Northampton Borough Council and Historic England was due to start last autumn, but was delayed.
Scaffolding has been put up and contractors will start lime mortar work on cracks to conclude in late summer.
All these little restorations going on across the UK ;-)