The problem with corporate control isn't that they require funding or they are private, the problem is they are motivated first by profit. Sometimes exclusively. So when "what's best" is at odds with "what's profitable", they tend to make the wrong choice.

Take this project for instance. If one day their choice is to forgo all future profits, or to close the source to continue operating, it's very likely they will close the source to continue operating, rather than forgoing profits. We've seen it happen enough to be wary from the project structure alone.