Please don't crucify me. Some hours ago PayPal payment system made some good decision of incorporating into their system buy and sell of Bitcoin, this has made it price to move from it former state. Basically ripple would have be the best for them IMO, seeing that ripple is the future of cryptocurrency irrespective of it centralization. As a ripple holder from inception, I did want Paypal to reconsider the use of ripple as it stand at the frontier of this era of digital currency. Hope this message get to PayPal team for appropriate actions.
Quite simply, whether you know it or not, ripple is nowhere near as popular as bitcoin. It has never entered the mainstream public media (although it might get reported on sporadically) but lots of people have heard of bitcoin. You should be happy that bitcoin has been accepted by paypal, as it gives more people exposure to the idea of cryptocurrency and makes it much more likely that paypal will allow trading of other ones in future.
it is possible that they combine the two technologies owned by bitcoin and ripple, when bitcoin has a very expensive price with high transaction fees maybe ripple can provide a solution because the supply from ripple is also very large so I'm sure these two coins will have something to do with the use of cryptocurrency on the platform paypal.