Just speculating but anyway, it could be related to allowing the digital dump of the various waveform samples, so that they could be used to create for example

Just speculating but anyway, it could be related to allowing the digital dump of the various waveform samples, so that they could be used to create for example a software plugin that replicates some or all the functions of that instrument. Modern hardware would allow the recreation of many old instruments at a fraction of their cost, either in hardware and/or software, so it's understandable that manufacturers are fiercely protecting their IP.