Source: "1 billion transaction payment just took place! #xrp #Ripple - something BIG is bowling behind scenes!" https://twitter.com/kOsOvA_CryptO/status/948145757944729601
1 BILLION XRP Payment = about 2 BILLION USD $ Link to actual transaction is on Ripple.com
Here's another 700 MILLION XRP sale. https://www.reddit.com/r/Ripple/comments/7nlrbc/another_700m...
When someone converts a billion in Ripple into $2B in cash in a reserve account at UBS or something, then you can be impressed.
Ripple also has raised $93 million according to CrunchBase: https://www.crunchbase.com/organization/ripple-labs
One random speculation I have - if you approach miners with large pallets of US dollars you can purchase BTC directly for a steep discount on the trading rates on exchanges.