I never really understood why Apple included php, ruby, and python (and others?) on Macs. Mac was never advertised as a "batteries included dev environment" nor

I never really understood why Apple included php, ruby, and python (and others?) on Macs. Mac was never advertised as a "batteries included dev environment" nor were any core applications relying on those languages (minus python, at least from what I understood). So why include it instead of asking the developer or engineers to bundle/install it? I know Linux often relies on python and perl scripts, so it makes sense to include them in the base system. But there's no reason to include them in the base system if they're not used.