edit: I just noticed you did acknowledge the small user base. So, that being the case, are you actually arguing that some executive at Netlifx is like, "Nah - screw open source - we totally have the spare resources to develop a Linux client that will have a negligible return on investment, but they can suck it?" If it's not worth it, they won't do it. It's like accusing Linus Torvalds of not being open because he hasn't yet supported your feature-of-choice from some other OS.