Comment by mananaysiempre

It’s a reference to a four-year-old discussion[1] in the Curl bug tracker about Travis CI introducing a similar prohibition on commercial activity in relation to open-source projects. The more general point is, fully open-source projects that earn money via support contracts are few and precious, and it’s a dick move to cut them off.

[1] https://github.com/curl/curl/issues/7150