>Single vendor isn’t a reasonable way to do Open Source and resist evil proprietary software. It’s just another way to do proprietary software.
>proprietary software is not evil. It’s just inferior.
Based on these statements the author would have you believe there is no value in commercial/proprietary software and we should just never develop it. All software should be open and collaborative. That is obviously silly. While open source software is great, many incredible software innovations and truly valuable software comes from proprietary companies. In fact, these companies are typically the ones that make the large open source ecosystem possible by making massive donations in developer hours as well as cash to orgs like linux foundation.
The interesting discussion is in whether commercial software should be closed source or source available with restrictions. The days of building propriety, VC backed infrastructure software with a traditional permissible license are over and likely never coming back.