The three functions of money will be accomplished by stages

Bitcoin is barely starting the first phase and many people don't use it because they feel it doesn't accomplish that correctly (in the short term of course). Using it as a unit of account now is not going to happen, businesses would carry too much risk. I'm working now onboarding merchants to use it but it's difficult cause they don't see much benefit. A couple of years ago I was in contact with a CEO who wanted to buy for her company, the board wasn't very fond of the idea but it was done as it was a small amount for them, around $10 k. I wanted to offer them a solution for bitcoin PoS but they don't want to hear about that, they're somewhere in -30% of their "investment". I'm patiently waiting for the market to recover and will go pay a visit then.