At least the Hunt Brothers did get their comeuppance with their attempt at cornering silver, but not so much for Buffet though.
Just to be fair, that large BCH address might have been an exchange cold wallet as I have observed and tracked Xapo's 520K+ BCH consolidation, meaning that they are also holding 520K+ BTC on behalf of their clients and millions of users. Though that particular BCH address certainly looks unusual as it only started at the end of Sep 2017.