Re: Oh please.
"I've pointed out in my earlier reply that Public Domain has been around for *generations*. Far, far longer than you or I have even been alive. So... please feel free to cite any examples of the behaviour you claim is so rampant."
Although it's not as permissive as public domain code, it is widely known that Microsoft have incorporated BSD-licensed code in Windows and other products, and you won't get to see the sources of the derived works. Given that Microsoft actually have to preserve the copyright and licensing notices (or get sued for copyright infringement), at least we have a record of that behaviour - with public domain code, there need not be any such record.
"Releasing software into the Public Domain was commonplace in the 1980s. Ask anyone who ever owned a Commodore Amiga or Atari ST."
So? In the microcomputer era, most thinking about sharing software was done in terms that are very unsophisticated by today's standards, which is why in the backwaters of the surviving niche platforms (and in the retro scene) some people have difficulty thinking about anything other than "commercial software", "shareware", "freeware" and "public domain" even today. And when people released stuff as "public domain", quite often the source code didn't come with it, so there was no notion of the sustainability that distribution of the sources gives the recipient - it was all "free as in gratis" and "we're not paying for anything", except when you were paying some library for their oh so expensive effort of compiling yet another volume of stuff they'd found on Usenet or some BBS and shovelling it out to everyone without a net or dial-up connection.
That you parade the usual flawed argument about a specific notion of freedom and accuse the FSF of being dishonest, apparently without having read any of their motivations which explain which kind of freedom they seek to guarantee, is evidence enough that all you bring to this discussion is a lack of insight into the legitimate goals of copyleft-style software licensing, a lack of understanding as to why such goals might be useful for people (which is very pertinent to that microcomputer crowd and the abandoned proprietary software that haunts their now-legacy data), ignorance of what the FSF's licensing achievements actually are (hint: the most popular FOSS licence is the GPL), ignorance of the breadth of GNU and copyleft-licensed software, and a complete lack of comprehension that people might not be cranking out stuff specifically for you to use as if it were your own.
Particularly this latter point should shine quite some light on your "entitlement" rhetoric. Next time you (or your corporate sweetheart, Apple) lament the lack of stuff to shove under the hood of something, in order to be able to weld it shut and ship binaries to end-users on an upgrade treadmill, you might want to get a sense of self-reflection and, well, reflect on that.