I think Bitcoin is an & and & story 🤔.
Western privilege makes it only make sense to see Bitcoin mainly as an investment vehicle.
Outside of that privilege it becomes more a permissionless payment rail, which conserves their savings.
It is the 'investors' that help holding the value (even with all the volatility, it is just free market), that makes it make sense to use as payment rail, being permissionless payment rail )at least having that option) makes it make sense to invest (not just scarcity, I have less than 21M drawings, that doesn't make them valuable)
♾️ Both use cases feed on each other, without the need of even interacting with each other. Just using the same tool for different purposes is what makes up the 'unique concept' of Bitcoin.