> software is a means of trying to achieve maximum efficiency of existing processes

When my paper airline ticket is replaced by software (the ticket shows on my phone's screen), is that streamlining existing processes or replacing them?

Your perspective may depend on whether you make printers or not.

Email streamlines communications by replacing letters and stamps.

Software is streamlining video rentals by replacing DVDs with downloads and streams. When the DVD factories shut down, is nothing being "eaten"?

etc.