Tricky question ! And I don't know what the official answer but here are quite some options. Here are just a few. I can think of much more :
There is still compatability(It's obvious that japanese compannies probally will support a companny that has less quality variance and doesn't abuse codes of there partners sooner as one that does all the above stuff.)
Also I don't know what SKC uses as technology but let's say the got some full inhouse developped technology (Which would be rare but ok.) And what if you want to strat makeing media but don't want to spend much money on R&D in the start. In other words you want to buy most of your technology.
Also can your companny make stampers if not then you have to order them from third parties.
CD-R atip's are not endless so why some might fancy to choose a unknown atip code or might fancy to use the free code others might just abuse a code or make a deal over the use of it.
I will see what I can find out on that relation between SKC and Infosmart and other hong kong brands.
About Beall and there problems Kenshin allready reported ealier about problems.