"Technics (I think) has already acted on the issue by requesting that EMC StyleWorks not provide for conversion from their keyboards"
Well, you do not need EMC StyleWOrks to copy a style from one keyboard to another. You can use midi and then do reviocing. So I do not see the big deal, especially styleworks are very expensive in my own humble opinion.
However, this is a sign that companies will try to implement features to protect their styles. For example, they may prevent factory styles from being transmitted via Midi or being copied to user-style. If they do something like this, they will lose buisness big time. No serious musician will buy a keyboard without the above two features.
I think companies should be content that if somebody purchased some disks of styles, that those disks will not be copied or given to another user. They can win this fight, but they will lose and be hurt with other fights.