I don't think it matters who is accumulating it. Eventually all these centralised pockets of #Bitcoin are brought into the formal / regulated / legal economy.
Since the state has the monopoly on violence, they can get those coins if they wish.
The US gov can today already grab a few million coins with the stroke of a pen.
It won't harm Bitcoins final mission (end fiat money printing) and there is nothing we can do about it. At the same time, I don't like it.
Plebs stacking harder into cold storage is the only way that they will get less. STACK SATS PLEBS!