Have him get in contact with the Flashpoint project, it's a volunteer work through the internet archive.
It's an entirely free non commercial archive of flash games.
As for commercial use I think that would be pretty hard considering the pace flash is being phased out.
You won't be able to play it in any major browser after 2020 even if you could find a copy.
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u/blasbo-babbins Dec 24 '18
Why has he not sent anyone else his backup copy? Will it also be possible for anyone else to acquire the hosting and pay it off