They wouldn't buy them and hold them. They would dump them after some accumulation. You guys couldn't afford to make the price stable bitcoins crash people get burned. The media covers the story of how people got burned. Then everyone is afraid of any virtual currency.
So the entire Bitcoin economy is currently about BTC 6.4 million and according to this
the top 1000 Bitcoin addresses hold about BTC 3.3 million between them. So how much of that do you propose has been hoarded by the government for the purposes of "destroying Bitcoin?"
Personally, if every one of those coins got dumped tomorrow, I'd be buying like hell.