Ok, that was funny. You can't even mine this XRP stuff. With other words your pie chart for 'XRP Ledger' would show 100% Ripple Lab Inc. You mix things up. And yes, next time use at least a pie chart with current data...
Well, if you want to call mining a prerequisite for determining whether one could speak of centralized or decentralized, then I think we are done talking.
The hard cold fact remains that any 'decentralization' within BTC died as soon as ASICS were introduced. And honestly, I think you know this as well - but consciously decide to ignore this.
A few large mining farms in the BTC sphere working together can pretty much do what they want. If you still want to call that decentralized, go right ahead.
