if AJ is selling new styles, new guitars, tweaked styles, then he deserves to be compensated, and has right to charge those who WANT it.
if AJ is offering OS ENHANCEMENTS,ADDITIONS, then he deserves compensation,...
if AJ has a great AUDYA4 manual, or a new improved AUDYA5 manual, then KETRON should pay AJ, and give it to all AUDYA owners for FREE
if AJ is offering bug fixes to an existing/original OS, then KETRON should pay AJ, and give us ALL the updates/bugfixes for FREE