Gold has already been obsoleted by fiat money because it's too expensive and slow to transact with in the modern world. Bitcoin won't necessarily have the same

Gold has already been obsoleted by fiat money because it's too expensive and slow to transact with in the modern world. Bitcoin won't necessarily have the same problem, because it's an information protocol. Protocols can be updated and improved. Even if the main chain ossifies and can't be improved, bitcoin tokens are already being moved to alternative blockchains (sidechains) via 2 way pegs.