I'm not against open source. However, if I were to guess, I think less than 1% of people actually review, let alone modify the open source projects they use. I don't really buy this argument.

I think we're seeing a new modality of openness now with open weights, or being able to modify agents with md files, skills, and so forth.

Before LLMs the barrier to modifying software was much higher - in skill and time investment required.

Now we're getting to the point where any user can say "Claude, I don't like that. Please fix" and have it fixed. Configurability/extensibility can work in some cases, but having source code makes it much more powerful.

I think it's pretty common in software companies to maintain own custom fork of an open-source tool/library.