What will likely happen is that bitcoin will only be used to transfer large sums between exchanges. Day-to-day payments will be handled off-chain. Another opti

What will likely happen is that bitcoin will only be used to transfer large sums between exchanges. Day-to-day payments will be handled off-chain. Another option is to use lighter alt-coins in parallel to bitcoin, again using bitcoin for long-term storage or larger transactions. You are right that the current bitcoin as-is is not suited for many small everyday transactions, as envisioned by many. The transaction rate and fees are just too high. This is actually - besides governmental bans - the one thing I think could take bitcoin or cryptocurrency in general down.