A currency should measure real prices. Real prices are falling. Ie - If you measure prices in bitcoin versus the dollar you will
see all prices are falling (by a lot) over the time periods you’re talking about. In other words, it’s happening while people are asking when is it going to happen. 
Not a light switch but a slow and grinding path (with volatility from one system and chaos and control from the other) with each person eventually understanding their own role in creating the world they see. 

The biggest problem (imo) is that few people do. Ie - The majority of people are actually giving strength to the system they hate by converting Bitcoin (mentally or otherwise) to a piece of manipulated paper (fiat) to then price things.  Reinforces that it is a trade. 
Hope that helps.