You're not modifying the license of the original work in any way.

Now beg Apple and Intel so you can modify it for your own use, they sure did lock it up forever.

I'm suggesting a scarcity of developer time

Its also a scarcity of developer time if they don't have access to the formerly BSD turned proprietary modified source code. With GPL, all code is always available to anyone by requiring anyone receiving the code to do the same, make it available to anyone else that got it from them.

You're a commie

You are projecting, if anything, BSD is what allows communist confiscation by allowing the code to be relicensed and closed off. "I want to take this but don't want to allow anyone else using my version to see my code".

Your logic is "I published a design for a new type of screw, so I should get to use everything made with that screw design for free! If you don't like it, make your own screw!"

No, the logic is "I designed a screw, I want everyone to be able to modify it if they wish, on condition they also allow anyone else to do the same as they have". Maybe your application needs a fancy interrupted thread for faster operations, feel free to make better alternatives for your use case, just as BSD and Windows exists alongside the Linux kernel for different purposes.

And then they do make their own screw and say "whoever wants to use it can".

You talk about "rights, rights, rights" but never any obligation to actually preserve it. Now the improved version can only be used by some people who are better than others.