Great piece of sleuthing! I marvel at people denying, “It can’t happen,” and “They would never do THAT!” Well, “they” sure have worked diligently as secretly as possible for decades to get to this place where they COULD do it only to mercifully decide to NOT do it and forgo the immense power and wealth it would mean for them. Ya, right.
You suggested we visit Wall Street and NYC. Sorry. I’d sooner visit Sodom and Gomorrah right before The Event. Washington, DC - ditto.
Re: the DTCC logo. Let me help you out understanding that.

I agree there will have to be some dramatic, physical forcing function to kick off TGT. Left unsaid is that it will have to be an emergency that will dwarf every previous emergency for humans on the planet. I’m thinking something like The Black Death + WWIII + the Great Depression + Krakatoa’s 1883 eruption. As you’ve said, anything we do to prepare now will seem like an overreaction but after The Emergency hits it will seem like a huge underreaction.