The large majority of the software isn't deployed by developers, but it is written by them, and it's rather difficult to deploy unwritten software. And if the p

The large majority of the software isn't deployed by developers, but it is written by them, and it's rather difficult to deploy unwritten software. And if the people who deploy them have to write it in the first place, they by definition become the developers. The issue can only be solved by catering to the needs of both parties. For example, the currently available distro packaging formats tend to require privileges to deploy, which complicates the development cycle. (Exceptions do exist, of course; for example, Nix doesn't have this particular issue)