It existing and being available for those who truly need decentralized money. It's a bit like saying the success of Tor is when X% of the internet's traffic is

It existing and being available for those who truly need decentralized money. It's a bit like saying the success of Tor is when X% of the internet's traffic is over Tor. No, the value of Tor comes from just existing and working when it is needed. Likewise Bitcoin provides something very different from fiat money, and success for bitcoin is retaining those properties and availability as needed.