You don't need to create a some big grand conspiracy around satoshi's anonymity.
Bitcoin in it's nature goes against the status quo at it's highest expression: money and control of such. It was rather obvious that TPTB would go against the creator. Look at all the previous attempts at stateless money = they all got shut down because they weren't decentralized networks. In sum, if satoshi was smart enough to create Bitcoin, he was smart enough to understand the fact that he must not reveal himself ever.
This doesn't invalidate TPTB theory tho, it could be that "satoshi" is some kind of very influential group that for some reason released Bitcoin, however it cannot be any state, since Bitcoin gives access to stateless money, the question is: who would be interested in trojan-horsing all existing states?
Satoshi knew the potential risks in regards to Bitcoin creation. The USA (as well as many other nation states) have 'rules' on the creation of currency in competition to FIAT (for example) ...
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http://www.communitycurrencieslaw.org/currency-laws/(Note: not definitively digital cash, so I will try to post another example later, however, you will all get the gist.)
The best way I can explain this is that when Satoshi talked about E-cash he/she/they were not only referring to Digital Currency ...
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https://en.wikipedia.org/wiki/Digital_currency... but to the fate of 'e-gold' / DGC companies, which tried to back themselves with physical Gold and/or centralized certification models.
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https://en.wikipedia.org/wiki/Digital_gold_currencyBitcoin is basically a decentralized DGC P2P network, where the 'intrinsic' (gold-like) backing is via the cryptography, math, finite supply and the electrical cost of production (plus any equipment / overheads) i.e. a rarity and scarcity value proposition and at the same time being 'money'.
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https://satoshi.nakamotoinstitute.org/quotes/government/..."Governments are good at cutting off the heads of a centrally controlled networks like Napster, but pure P2P networks like Gnutella and Tor seem to be holding their own."... - Satoshi Nakamoto - 2008-11-07
A statement that remains true today.
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Cryptonomicon
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https://en.wikipedia.org/wiki/Cryptonomicon