For someone who is not a political insider with connections in the upper levels of international banking, every possible place to store savings carries the risk of being frozen or confiscated. Every time the weekend comes around there's a real possibility that you won't be able to access your money on Monday. Without connections you'll never know before it's too late.
Holding bitcoins avoids that risk.
The fed, who loves to print trillions of paper bills every year, or any billionaire for that matter, could just as easily buy up all available coins and then freeze them, causing a massive deflationary spiral much like were seeing today, which would enrich them to a point where if they wanted to destroy the bitcoin economy they could issue massive sell off's that would send it plummeting and have retailers running far far away from this super dangerous currency, which after bankrupting everyone would effectively kill bitcoin.
For every bitcoin they buy from me I will double the price. They will need more than mere trillions, and they are welcome to try If they really do it and then dump, I' ll buy back at bottom.
Thinking you can buy out a company, and much less a currency for mere market cap is stupid.