You are talking specifically about the financial and banking industry. Working in the banking industry , compliance regulation prevents banks from communicating about why your funds are frozen so the SEC can investigate and determine whether are not a fraud or suspicious activity were committed.
Such thing does not exist in the IT Industry. Microsoft ran their in house auditing tools , determined the account was suspiscious , set a flag "is_suspicious" as "true" in their database and the next day a batch ran and suspsended their account.
IT Audit for GAFA is 100% automated , there is no human interaction unlike Banking , Insurance and Finance.
Hence, the fact that BFA must communicate after the investigation about what fraud you committed to properly charge you in court and banned you from the services( You can even be banned in an entire country from owning a bank account depending on the severity ) but they must tell you why.
That is not the case for tech, it is completely unregulated which is why it's making me this upset.