Indeed, and in that respect Echelog was a great source of OSINT material for the anecdote I described above. That, along with `whois` data and other public databases can reveal a lot without putting oneself at legal risk.
Once you’re dealing with criminals that are stealing in the order of millions of dollars, or sometimes even hundreds of thousands, the probability of being killed off for being a trouble maker dramatically increases. Anything over 10 million you will almost certainly be killed if discovered. By then you are dealing with robust criminal organizations with full time employees on a payroll with families to feed, and they aren’t going to put all that at risk because of one nosey fuck snooping around.
For one, the evidence might not be admissible in court of the defense has an okay lawyer. This goes for if you're doing it all on your own, and with no approvals and alignments.