Should a 'Nation-state' decide to bulk buy... say 2 million 10nm ASICs... they could potentially create a 'central reserve' [as they would capture the vast majority of the 'freshly minted' BTC].
However, I feel that this would concurrently encourage other 'Nation-states' to participate in the same manner.... which would decentralize the power of the initial first-mover.
In any case, 'ASICs' are certainly going to be the main source of the BTC network's computational power [so i guess in that sense the technology itself could be considered a symbolic 'central reserve', though i don't see how we gain analytically from considering it as such....since the term defines a unitary body that is capable of making choices..... ASICs by definition can do only one thing] for the foreseeable future.
...then again, everything might turn on its head once Graphene Microprocessors & Spintronic systems arrive en masse...
-Johnny
www.americandatafarms.com