Everything else aside

> Those that develop on top of open-source have no obligation to give you their work for free.

This is a pretty narrow view of open source.

Just as a simple example, GPLv3 and AGPLv3 are both considered Open Source and, depending on how you hold them, may obligate releasing work to customers essentially for free.

I thought I was clear:

> When one develops using open-source software they have an obligation to follow the licenses.

Obviously what follows from one of those licenses is what you say.

I’m glad we agree!