@erlend Your writing is spot-on with this.
I'm reminded of two scenarios, one specific and one more general, that I've seen play out:
1. The browser Floorp is open source, now being co-maintained by a floorp-specific organization as well as the original programmer collective that got to work on it, Ablaze. Early in its life, they had to close Floorp source code for a little bit and reasses their licensing. This is because, with every new release of Floorp, a freerider would pull the code from git, change one or two assets, and then rerelease it as a browser called Midori, trying to drum up publicity for "their" new browser that was wholly taken off the back of the programmers at Ablaze. The floorp subreddit, for a while, seemed to be more angry that Floorp was temporarily closed source than they were at the kind of brazen code dropshipping that Midori was doing.
2. There's the trend of big companies releasing code that is technically open source, but which is clearly built for a very very specific corporate system. The software is so hard to configure, deploy and maintain that most people will not bother, and then the company sells their solution, where they do all that work for you. For some reason, when massive corporations do this it's seen as a net positive open sourcing of their code, even when it's purposely made with so many footguns as to be basically just source-available proprietary code. And yet, when smaller developers make source-available paid code, they're derided for not being "open" enough.
So much of open source thought has been weaponized and turned into a form of digital landlording. CC-BY-NC is a great step. I hope we see more licenses come out with specific boundaries around who or what can use the code without payment, and I hope we see some real legal precedent to give teeth to open source license enforcement.