What has undoubtedly happened since Raymond’s time is that Intel, Google, etc became the biggest Linux contributors
Mozilla has been almost entirely funded by search revenue for decades
Big pieces of open source like the JVM and MySQL seem to require corporate stewards, for better or worse
Microsoft did a 180 on open source, to some acclaim, which I’m still skeptical of
So the framing is it a bit wrong now, and modern writing probably needs new terms to make these distinctions clear
There is independent open source but it seems clear that most open source is funded by commercial entities