Perhaps OpenAI is aiming for a more compelling suit of things for penetrating enterprise (I'm just speculating as I go here).
Having a private package index gives you a central place where all employees can install from, without having to screen what each person is installing. Also, if I remember right, there are some large AI and ML focused packages that benefit from an index that's tuned to your specific hardware and workflows.
Plus the obvious need for a place to host proprietary internal libraries.
Every company needs its own package repository. You need to be able to control what is running on your environment. Supply-chain risk is very, very real and affects anybody selling software for a living.
This is besides the point that in the real world, not every risk is addressed, at least in part because available resources are diverted to address larger risks.
Most of the companies that spend $$$$ with them can't use public registries for production/production-adjacent workloads due to regulations and, secondarily a desire to mitigate supply chain risk.
Artifactory is a drop-in replacement for every kind of repository they'll need to work with, and it has a nice UI. They also support "pass-through" repositories that mirror the public repositories with the customization options these customers like to have. It also has image/artifact scanning, which cybersecurity teams love to use in their remediation reporting.
It's also relatively easy to spin up and scale. I don't work there, but I had to use Artifactory for a demo I built, and getting it up and running took very little time, even without AI assistance.
Like, nobody really pays for web servers - there are too many good free options. They're far more complex than Artifactory.
I guess it's just that it's a product that only really appeals to private companies?
There are no competing open-source projects because such projects would need to provide more value than Artifactory/Sonatype OSS, which are both already huge projects, just to be considered.
There are also several free registries out there: Quay, Harbor, and Docker's own distribution. They all have paid versions, of course.