Blockchain has survived without bitcoin before now. Blockchain technology is only created as a solution to solve bitcoin issues. Infact bitcoin need blockchain to survive rather blockchain surviving because of bitcoin.
I think hundreds of applications interesting launched in technology blockchain and some of them will get the appeal for sure. blockchain here to stay! bitcoin has play an important role to make blockchain running and put it in a place like right now. but I am very confident that although bitcoin failed in the future, technology blockchain will win.