[zwetan]

The key word is infrastructure.

Github should not be the master, it should be a mirror of a company master that they host on their own server.

The main problem with that is some company do not want the cost of the infra + the cost of the sysadmin to set that up, etc.

The second problem is the build, even if you host your own repos, if all your dependencies are on github and you don't include them in the repo, then you are bust.