If software engineer productivity basically doubled as is being claimed in this thread, I think you'd see companies scrambling to lay off everyone else in an effort to hire even more software engineers. They'd be by far the most valuable and productive employees at every tech company and you'd be foolish not to have as many as you can. I'm being a bit facetious but throughout history when a resource or profession takes a dramatic leap in efficiency, the demand for that thing rather than decreasing as is predicted here, only increases since it has become far more valuable & effective.