This is the reality that about 11 to 12 banks just made contract with ripple for the Foreign exchage payment , so no doubt that use of the ripple by these banks will increase the value ( we can also see the impact of the news of accepting bitcoin by banks in exchage of big flutuation ) .
But here your word abandoning is misleading , it is because you can't say ETH is abandon by the banks or traders or bitcoiners Because the Current trend in the altcoins is in the ETH and everyone is going to buy the ETH like most stable altcoins .
So probably it may be possible that soon the value and price of the ripple may touch the ETH and Became a more stable like ETH DASH etc .