There are all kinds of things that go on in the world that I don't have evidence for....doesn't mean that they aint going on.
If there is one axiom in finance that history has proven to be true, it is that:
'The Big Boys Always Win!'
If Bitcoin is destined to become massive, do you think that the early mining geeks are going to be the ones who are controlling it? Not a fkn chance. If Bitcoin is destined to become massive, then it will be the Big Boys who control it.
I don't know if you have noticed, but there is an economic war going on the world, where the US is trying to remain on top by crashing their hyperinflated economy down on top of all the other global economies. The Chinese know this, and currently greatly exposed to the US dollar, and are moving out of it wherever they can, hoarding every ounce of gold they can get their hands on (they will be loving the depressed state of the PMs market right now), and are setting up trades deals in other currencies whenever and wherever they can. Bitcoin is just another asset, with huge potential. Do you think they don't realise this? Whilst they may want to avoid allowing their citizens to use Bitcoin to undermime their financial system, don't you think that the Chinese would like to take control of Bitcoin? If Bitcoin is indeed destined to become huge, don't you think that any government wouldnt have an interest in having a large stake in Bitcoin? Perhaps the Chinese have been intentionally ramping and crashing Bitcoin, in order to quietly take control of the market? Perhaps, perhaps not. But the big-boys don't get to be and remain big boys by not being able to see and exploit what is coming and one thing is for sure, the Chinese government have the whole Bitcoin market hanging by a thread at the moment, and can make or break the Bitcoin with any announcement they happen to make towards it.
The whole idea of 'governments and bankers hating Bitcoin' is over. The notion of Bitcoin being an anarchistic force punching holes into the financial establishment is officially dead, from the moment the Ben Bernanke and the Senate Committee stated that Bitcoin was a valuable financial product.
This is plausible but in the context of a USD 8 Trillion economy versus the USD 10 Billion market cap of Btc, I think maybe it's a little too early to think about SAFE or SASAC involvement. More likely, some local govt official somewhere or a small bank might be dabbling.