You can do a pip install of python bindings but not the source package itself. For e.g., pip install redis gets you python bindings for the redis but not redis itself. With this setup, you can install a specific version of redis, run it as a service with your custom configuration right out of the box.

That's a good benefit for consideration, thanks for the answer.

I'm guessing easy resource allocation, either through local machine quotas/cgroups or the easier ability to move specific services to different machines as you need to scale them.