I'm pessimistic about that. Yes, Ripple gives faster and cheaper transactions, even heard that it was conceived as early as 2004. However, unlike Bitcoin, it was originally used by banks as a transaction network. In other words, this is a centralized cryptocurrency. I think, this is one way for the banks to compete with decentralized cryptocurrencies. Btw, ripple cannot be mined and the creators have complete control over this token. People wants to get away from centralized currencies nowadays. Once cryptocurrency enters it's ripe stage, bitcoin will still hail as the king. why? let me spell it out: B L O C K C H A I N.
It's not even the blockchain technology itself. Ripple and other alts can use the same technology or find some other solution. The problem is what you said before, ripple is completely under the control of the developers and a few handpicked validators. Blockchain in their case is little better than a centralized database. And that is what people are moving away from. From having to depend on banks, governments or others to dictate who can use their services. With whom we can deal with. And under what conditions we can do so.