Your comment reminds me of Leonard Read's classic essay, "I, pencil" [1] about the many thousands of hands that make a simple pencil, all guided by local decisions and price signals, without a single mastermind.
Going from "central planning doesn't work" to "therefore we have proven that unregulated capitalism leads to utopia" is...odd.
Previously, there was a data collection, storage, and processing limitation. Manual collection, entry, and early computers simply couldn't process quickly enough to continually model the economy at the requisite fidelity.
But now, we still have the human data reporting problem, where the storage, network, and computational resources are possible, but the first mile "getting true numbers, reliably" still prevents the implementation of an effective centralized system.