Ripple wasnt designed to be a coin or a normal cryptocurrency by the standard definition. While bitcoin and comparable cryptocurrencies give the value of the coin equal priority with network security, speed, and applicability, Ripple does away with the idea of XRP as any kind of investment asset and instead focuses on making the blockchain as strong as possible.
The Ripple blockchain isnt open like those of other cryptocurrencies. XRP can be safely stored and kept, and uses cryptography to protect participants. This allows the currency to use the advantages of the blockchain ledger, but in a closed ecosystem that makes it more efficient.