Well, for example, the SEC has used a law from 80 years ago about retaining memos as justification for billions in fines against companies whose employees used

Well, for example, the SEC has used a law from 80 years ago about retaining memos as justification for billions in fines against companies whose employees used whatsapp to say "the market is crazy" (or similarly benign things). All they did was "fill in a gap" to make this totally new law.