Bitcoin has achieved its goal a long time ago when it went from $1 to $100.
Do you think the goal of Bitcoin about the price? I don't think it is the goal of Bitcoin created by Satoshi. Satoshi created Bitcoin for an alternative of payment purpose that never uses the third parties. So, we can transfer it any time and with low fees. This is the real goal of Bitcoin written in the whitepaper of Bitcoin.
Satoshi aimed bitcoin to become a means of payment like fiat. But i know its not created to replace fiat, but rather to serve as an alternative to fiat because fiat alone is irreplaceable knowing its fully centralized.
However, if we can make bitcoin as a global currency in the future, that will be a greater achievement in guess in the future, but it will be a long waiting game when will it happen definitely.