Too early to say this. Not only because people arround the world still need more time to accept the tech and adopt it, but we can't deny the fact that bitcoin can't replace all the circulating FIAT arround the globe. In a recent analysis, 1 bitcoin should be worth $1 million if we aim to replace just the dollar currency.
Without to forget that bitcoin is still in early stages as a global currency and its network still need to be maintained by devs in order to make it stronger and solid.