Not only would it risk the market value of the stake, but in Ethereum's version a double-spend attempt would result in near-immediate destruction of the stake.
If a coin is worth a trillion dollars, could a nation state just start buying up huge amounts, essentially indicating a 51% attack will occur soon, causing a rush for the door, causing prices to drop, despite the clear demand?
Or would prices go up because there'd be a guaranteed buyer and a group buying at the moment.
Dogecoin, which was made as a joke, has the 6th largest market cap of cryptocurrencies. It’s incredibly hard to predict how it would affect the market.
