Did he try Dropbox support to see if they have a backup?
Oh yeah, completely exhausted that route - it was over a year before he realized it and way past their retention period...
"Hi Dropbox support! You get $1m USD if you figure this out."
Generous bitcoin contributor may be thinking that he made a wrong choice of giving away.
It had 1,000 BTC in it! He had received them from a generous Bitcoin contributor in the early days who said "here you go, hold on to it, it will be worth something someday."
I still give him a hard time about his $3 million USD mistake...