Having 1 million btc is a complete obscenity.
He should start giving them away somehow.
He is not the 1% but the 0.000001% Warren Buffet is broke compared to satoshi (talking about wealth percentage)
What do you think?
A million btc is not worth what you think. If a million BTC were to be sold or given away in a short period, it would crash the market -- devaluing bitcoin in general, and devaluing your own coins. That would be an obscenity.
If Satoshi is not into criminal money laundering or tax evasion, then his fiat capital gains will be taxed when they are converted into fiat in accordance with his local government's taxing authority and will be redistributed then.