Possibly, but I’m still stuck automating using SQL*Plus. If it just had libreadline [CURSOR UP] history functionality, it would be really powerful (the official documentation on it is 600+ pages). pgsql and Vertica databases don’t need any more client enhancements, but the one database which does doesn’t get one. Talk about a missed market opportunity!
You're assuming that most DBA's or companies using Oracle would pay for more powerful CLI. In my experience with Oracle DBA's, most just use SQLDeveloper.
Can't use SQLDeveloper to automate, because you can't call a Java GUI to run SQL and PL/SQL code inside of an OS package postinstall since it has to run in a headless environment. And if you're automating that way, you want a powerful command line SQL client while you're automating, otherwise it's a pain in the ass to switch back and forth.