Great question. They don't compete because public banks are really just a proxy for central banks.
There are probably 10 public banks that matter (too big to fail ones) and they'll do just fine in the new regime because they are needed.
Programmable money rails (stablecoins → CBDCs → tokenized deposits)
Why private companies are used: State wants programmability without wearing every error; card networks/clouds absorb blame, scale UX.
Levers: Treasury/central-bank pilots, tax/VAT split at source, merchant MDR incentives, wallet whitelists.
Proxies: V/MA/ADYEY, FIS/FISV/GPN, COIN (custody/stable infra), MSFT (identity + anti-fraud), banks with tokenized deposit pilots (JPM).
The Controllers outsource switches (identity, provenance, programmability, audit, revocation) to public companies.
There is no fight/competition, it's all coordinated.
More context: https://controlplanecapital.substack.com/p/why-the-controllers-use-public-companies
Thanks for your view and the article. Appreciate it.
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