Ok, so why did XRP suddenly hit $3 (and above) in 2017 and went down? I would go with the theory saying that it reached high because banks and businesses shared their positive feedback about XRP. However, the actual adoption and the further domino effect might take 5 to 10 years, but it will (since XRP has already proved to be a reliable tool for cheaper and faster global transactions that can be effectively used by big enterprises). The question is when and how fast they will adopt the new xCurrent framework that takes the process to the next step. Once they do, the domino effect cannot be avoided and the price will hit even above $10. The question is when and how fast. That's why I am pushing for XRP being a long-term investment option now.
Look at the total supply and the amount circulating around in the market. Billions of XRP won't be reaching $10 anytime soon as the market cap will be excess. Again this is a centralized coin and people are moving to crypto currency to have financial freedom from central government. We save the price reach $3 back then, but other alt coins including bitcoin also skyrocketed.