More developers isn't at odds with the previous comment. That is how you can more easily push the jobs to low cost areas! When 张三 in rural China is given his first computer he can jump right into being a programmer too. Thus you can give him the job instead of a high priced developer in America.

You haven't even put developers out of job as you must remember that I also wanted to build a thing, but couldn't because you had all the available developers tied up. Now there are two freed up who can come work for me. There is no end to all the software we want to write.

Or both. That would be my bet. The industry in general will see a decline. The massive growth in developer numbers will place enormous supply-side pressure. But certain experts who remain supply constrained along with increasing demand for those special services amid the explosion of new software being written will make a killing.