Bitcoin, currency for a finite world

What could be the future of Bitcoin, that cryptographic currency without centralized control whose rate jumped tenfold within a year, from 700 to about 7,000 €? BNP Paribas wrote a report concluding that the future of Bitcoin would be limited by its lack of lender of last resort as well as its deflationist character: as a currency, it would be condemned to fail. By contrast with many other claims from financial institutions against Bitcoin, this one at least is based on structured arguments. Are they convincing? What will be the future of the queen of cryptographic currencies?