S/360 certainly shipped before Unix and yes:

In 1965 IBM released the 2741 terminal. It was basically a selectric typewriter that directly (and digitally) interfaced with mainframes.
There is one in that picture that I linked to.

The idea of paper tapes and cards was a reflection of the computer environment of the day. A lot of data preparation was by agencies and the processing by bureaux (shades of "cloud computing" ) and paper tapes and punched cards were the most cost effective way of preparing and transporting the input data.