The person who originally sent the broken transactions deleted his wallet
Sigh... why delete a wallet instead of moving it aside and keeping the old copy just in case?
You should never delete a wallet.For sure he has a backup. Somewhere...
I've always thought to myself that it doesn't seem right for him to destroy his wallets or lose access to them. It would be like losing or killing your own baby, though I suppose he could have deleted them because of the power it could bring and maybe he feared becoming corrupted by wealth. Hopefully he's just bitcoin's biggest holder and is waiting for them to go worldwide before he starts to use them hehe.
it is the other way around: if he would use an old address with millions of coins,
BTC would take a massive hit. i guess all early mined coins are lost. he did not sell at 1200 USD, so he will never sell/move those coins and that is good for the whole system!