Yes, today, blockchain can decide many problems and some people call it the perfect decision. We do not know anything about the future - probably, the new technologies, better than this one, will appear.
The main solution blockchain solved is the double spending problem and it is a revolution that was bugging the community for a long time when it comes to digital currency, the possibility is enormous and even now major mainstream companies are investing their time to explore about the possibilities and with time we will see many solutions with the development of blockchain. If the real developer behind blockchain would have stayed longer we would have major updates and solutions by now, but he disappeared before that without exploring the next stages and that is a real bummer.