I can't see other reason for Facebook to be raising money if its not to back its own decentralized crypto. FB wouldn't need to raise to issue a stablecoin. Everybody in the original topic said FBCoin couldn't replace bitcoin. While I agree that the ultimate store of value will remain BTC, I think FBCoin could easily surpass BTC in daily usage and, therefore, market cap.
With members in all around the world and members more than 1billion people, i think facebook can reach $300billion because if its very potential to be adapted. Facebook is profitable company and i am believe many big investor interesting to invest