For the currency to be a store of value, it needs to fulfill obligations, some of which are economic and others political and regulatory, the possibility of purchasing, and the ability to settle payments, all of which do not apply to stablecoins due to their small market capacity, and that there is no 1:1 peg to the US dollar, and there is no political or military force that can stabilize In short, a single regulatory decision that limits the access of these currencies to US banks or reduces holdings of US Treasury bonds could affect their value to be below $1, and rumors and panic will be enough to bring that value back to zero.
https://twitter.com/elonmusk/status/1648691889846071296"Elon Musk
Given Federal expenditures, it is a matter of when, not if, we default
Apr 19, 2023"
Not a single government paper (fiat money), and especially digital candy wrappers USDT and USDC, can be a means of preserving capital.
Inflation in many countries devalues money every year.
The main reserve of USDT and USDC is American debt obligations, but if this pyramid collapses, then you need to understand that about half of the US government debt belongs to American companies and citizens. And most countries, such as China, are getting rid of Treasuries.