I don't post much, but been reading here/buying small amounts of BTC since Cyprus. Mark Marie Robert Karpelès owes me.
As mentioned, any or all m/billionaires are probably too smart to personally risk much to kill BTC.
The big moneylenders? Visa/MegaCorp/<fill in the blank>? They would/should go deeply into debt to kill BTC, because it threatens their bread and butter. They should do this for a loss, to preserve the FatCats at the top of their food chain.
I also notice that this thread is the most literate and thought-provoking one, among many that are not. Any thread that starts with "Do you think that $$$ is {anything}"? Save the bandwidth, save your time.
Thanks to you all, for what you do.
IMHO, don't buy pizza. Hodl.