"Because FLOSS enables much of this software as a service (SaaS), then it becomes the root cause of the reduction in jobs." Rather than hiring more developers

"Because FLOSS enables much of this software as a service (SaaS), then it becomes the root cause of the reduction in jobs." Rather than hiring more developers to create the SaaS, a business now is able to just get free OSS and hire less developers (and less experienced developers). How is this not putting developers out of a job?