Well , this is my opinion only.
Governments worldwide are financially dying, most European governments for example are minus billions, debt to European bank. USA is not better .
So they try to find money anywhere, now the agreement between countries to report... Their new road for gold.
They look after every cent and hope for more with criminal money.
A lot of different people used offshore companies / banking : the simple guy that worked honestly and sold his company and didn't want to pay tax and give all his life work to Tax authorities.
Governments people that have made big deals and sent retro commissions discretly to offshore. Criminals of course: dirty money from fraud etc...
It's an announcement effect guys, I saw in 2012 the HSBC Hong Kong trading 200 of its customers to a country where they are citizen against the right to work in the same country. Nothing new! Now it s just official, it let's you time guys to think out the box and take out your money.
For now we have the crypto, let's use it.
@Martin Everson , seized BTC, do you mean the market place on the dark that have been seized? If yes it a bit more complicated than this