Sorry for being unable to sympathise with these developers but: if you want to make money out of it, make your users pay for it. How is this rocket science? It'

Sorry for being unable to sympathise with these developers but: if you want to make money out of it, make your users pay for it. How is this rocket science? It's not even incompatible with the principle of open source. One thing is adding a paid plan after you decide you want to monetise your software, it's unpopular but understandable, another is bundling malware or adding malicious logic to get some money or "protest" because companies aren't paying you. They knew this is how open source worked, and being a twat because they don't like those terms anymore just ruins their reputation and all the goodwill they've built.