I'm not sure if you're referring to the boycotters or HN. But I'd hardly call a vocal minority "the market." The lines in the Whole Foods a couple blocks from my apartment seem to be just as long as ever.
In which case they're hardly infringing on his freedom of speech, now are they? I am, incidentally, quite serious: I can't see how "The boycotters are a meaningful threat to freedom of speech," and "The boycotters have negligible impact on the real world," are anything but mutually exclusive.