This is called the Local Knowledge Problem. It's why centralization can't work and has never worked, at least not until we have some ASI they can overcome it.

I think you are directionally correct, but too strong. South Korea ran a protectionist command economy for decades with great success. Clearly it can work. China is now a superpower. Clearly it can work.

our ad-tech monopolist and burgeoining retail overlords control so much information on our behavioural patterns that they can probably see a crunch coming before anyone else, if they would really want to get in that game.