An important point to keep in mind is that with the new, the old does not have to completely go out of the way. If we keep this point in mind, there will be some continuity and not just discontinuity. Let me give a few examples:
If you think about the typewriter, people do not use it anymore. However, people use the computer. The computer has replaced the typewriter completely or nearly completely, but the functionality is still the same. There is continuity.
Similarly, "Old school writing" is still with us today, even if people use computers for most things. From this perspective, there is continuity again. Moroever, I suspect that writing will never really go away.