I don't think they will because, they are centralized systems and they need a KYC system to avoid money laundering. So, maybe they could have a secure system to avoid hackers getting the data, but if someday the FBI comes with an order to get access to that data, there is not much about they can do to protect individual privacy.
Not really a good excuse.
You can still have a kyc system that is very privacy-friendly and anonymous.
Centralized system is prone to abuses.
I don't see why a global body that preaches rule of law shouldn't be welcoming the idea of transparency, decentralization, anonymity/privacy, checks & balances etc