Isn't Ripple a centralized exchange that can get blocked by the US government, just like Mt. Gox?
You have to view Ripple as 3 levels:
(1) A fast global payment network (10 second ledger blocks).
- it will be decentralized once Critical Mass is enough to open source
(2) Built-in exchanges for ALL currencies and Custom Currencies...
Now linked directly to Bitcoin network.
- plus anyone can create custom securities = killer app
- plus anyone can run an exchange = killer app
(3) XRP = internal currency = brilliant idea to make #2 work
It's not about XRP, it's about #1 and #2 = Good For Bitcoin