Bitcoin has only been around ~15 years. This is all still an experiment. You can't technically guarantee Store of Value. Controlling supply alone isn't enough. SoV is also also a function of demand (which is subjective so can't be controlled) and larger players can always manipulate price like they do with traditional finance especially when large CEXes are involved.

>A vital function of Bitcoin is the game theory level. Bitcoin has a design that allows it to pressure jurisdictions towards liberty-oriented policies *because* it is the best store of value.

"Bitcoin is therefore inherently a black market money. Its security architecture necessarily assumes it is operating without state permission."

https://github.com/libbitcoin/libbitcoin-system/wiki/Permissionless-Principle