It's turtles all the way down.
I prefer the way our industry evolved without interfaces being copyrightable.
[1] https://www.opengroup.org/openbrand/register/brand3653.htm
You guys need to find an example where one company offered licensing and the other simply refused to negotiate.
> You guys need to find an example where one company offered licensing and the other simply refused to negotiate.
Part of the trouble with this, I think, is that prior to this case, nobody thought there was a need to license this, since it wasn't covered by copyright by any sane reading of the law. (And I still think it isn't, and the appellate court erred in overturning the district court.)
The best counter-example I can think of is "Microsoft NWLink", which was a Netware 3-compatible file server offered with Windows NT. How long and under which legal threats is unknown to me.
This might limit someone else's to reimplement the language's own specs? Something like LLVM will be forbidden in this case?
And Web is a complete mess, if CSS also an API? Are different JS engines will be allowed to be implemented later?