I understand and accept the points about 3rd party firmwares being more closed than Bitmain's own, I have disregarded this.
My comment for more openness was a general comment.
I do understand Bitmain's approach and can accept it (make sure their HW is not used in other ways, foreclose revenue of 3rdparty firmware makers, etc), but in general I don't like limiting usage of a HW I own through software (be that a laptop, mobile phone, game console, etc.)