Historically, it would seem that often lowering the amount of people needed to produce a good is precisely what makes it cheaper.
So it’s not hard to imagine a world where AI tools make expert software developers significantly more productive while enabling other workers to use their own little programs and automations on their own jobs.
In such a world, the number of “lines of code” being used would be much greater that today.
But it is not clear to me that the amount of people working full time as “software developers“ would be larger as well.