Not "all software on GitHub" because most of that is proprietary. To run it yourself it generally needs to be [free software](https://fsfe.org/freesoftware/).
The dominant licenses on GitHub are Apache and MIT. Neither of those licenses designate proprietary software. Both allow me (as an individual) to run software myself.
In fact, the licenses which satisfy "free software" criteria -- GPL etc. -- are more or less impossible to use in any context where legal jurisprudence would apply. That means any context where a lawyer could possibly get involved.