... surely a legitimate business should be able to survive a single client leaving, right?
Now, hypothetically speaking let's for just a second, lol, assume that here is indeed a ponzi scheme, and this ponzi scheme has announced that soon it will significantly lower "the interest" at some given date. This hypothetical ponzi scheme has also made some announcement that it's principal who remained anonymous for long time will magically appear at some meetup (with "private security") just a few days before the interest cut-off date and reveal to the world his identity.
The question is: Why our hypothetical ponzi scheme would make such moves? The only plausible answer I can see is that this is an attempt to create an incentive for investors to postpone the decision on withdrawing "the investments" until the cut-off date and play on healthy curiosity of most of the hopium smoking victims. Thus this is creating a window of maximum opportunity for said hypothetical ponzi master to have all the money suddenly "evaporated" right before expected miracle of ceasing being anonymous and actually instead of it.
Now, for another second let's equally hypothetically speaking assume that this is indeed not a ponzi but some miracle worker with some troubles rising low cost capital. Why would such a legitimate gentleman all of the sudden decide to go public on some second tier meet up? Right before dramatical change of "interest" date and after ignoring persistent calls to come clean for very long time, no less. Why not just have a website and post registration details of a relevant company?
Curiosier and curiosier.