Bitcoin is just proof-of-concept.  We're already seen better tech, with better options coming online.  Over the next 5 years, we'll continue to see an explosion of next gen. cryptocurrency options that will put the blockchain to shame.  That's just the way technology goes and since Bitcoin doesn't have enough developers dedicated to the core, there's no way Bitcoin is going to be able to keep up.  People are too busy making money off Bitcoin to care about the core.