Disappointing that the maintainers need to make a living (or, godforbid, even a profit) and that users can't get everything for free? Nope.
It's disappointing because it's a problem with no clear winners. It's difficult to solve it for all.
I was not trying to be contentious, just observing that open core is difficult to do it right for all parts involved.
Things will align themselves, probably a fork, users moving to alternatives, or something else.