Manufactures Styles and professionally produced styles (The ones you pay for) have always been copyrighted, if you read the small print in your keyboard manuals, and also on any site that sells styles, you will see it contained within.
Style converters will not be impacted because they only provide the means to convert styles. (The user has to supply the styles)
So don’t worry about it as nothing is about to change in the near future.

Bill