When I said "most successful" I didn't mean it was a complete success, just that this is the best we've done without a state. Currencies are hard, history is full of them failing. Maybe when an asset is liquid enough, it becomes like a currency.

Gold/silver worked reasonably well for thousands of years and unlike bitcoins they functioned as an actual currency.

Even if you can pay for stuff with bitcoin it’s not a currency until people actually start setting prices based on it.

> liquid enough

I’m sure I could find people who would accept Apple’s stock in lieu of actual money, that wouldn’t make it a currency