Bulmer either doesn't have the masters, or he doesn't have tapes fit to use. When he bought up the rights, he probably assumed he was getting all the tapes in existence and what he did get were no use. He probably felt as though he'd been 'stitched up', and didn't want to appear stupid. I don't believe he's held back potentially profitable releases for any other reason than thinking there were no tapes fit to use at all. The 'Bright Phoebus' CDR was taken from an LP because he was completely unaware that the British Library had the source tapes all the time. That much seems obvious.