The author calls out they are specifically talking about open source solutions that compete with paid offerings. IMO, the jury is very much still out on whether open source "wins" in this regard. In the past decade we've seen a huge rise of open source products, and in the last 5 years or so we've seen many of them move away from that. MongoDB, the Hashicorp stack, Elastic, Red Hat, MinIO, the list goes on.
There are not that many truly open source, commercially competitive products remaining and many of them are fighting to prove it's a viable business model.
There are not that many truly open source, commercially competitive products remaining and many of them are fighting to prove it's a viable business model.