Restrictive (copyleft) licensed software like the Linux kernel and the GNU toolchain indeed follows a communist philosophy that fails to see the value of free market competition, and instead relies on government force (see gpl-violations.org).
Public domain software is ideal, but the most permissive (least restrictive) FLOSS software stack you can get today would be based on minimalist "cover our legal butts" licenses like BSD. Other great permissive software includes Apache, PostgreSQL, Python, LLVM, X, vim, libtorrent, the Xiph codecs, and so on. Major kudos to Google for releasing Chromium under the BSD license, which for the first time in history finally makes a decent 100% free software desktop possible!
The Windows Interix subsystem could have evolved into a great UNIX server platform, but socialist governments (especially in Europe) place severe restrictions on what Microsoft can include in their products, which is the only thing holding them back. There has been some effort to get Gentoo's portage or NetBSD's pkgsrc working on it, but it never got off the ground. It seems like the open source community is ostracising Interix for purely irrational anti-capitalist reasons, and that's really a shame - it could have brought the power of UNIX to the >90% of users who run Windows! (Yes, there's also Cygwin, but it's embarrassingly slow, buggy, and incomplete.)
As Stallman's economic fallacies become ever more evident, I expect ever-more developer time to shift to 100% free (non-copyleft) software, which means there's a very bright long-term future ahead for platforms like FreeBSD, OpenBSD, NetBSD, NewForkBSD, and even MINIX 4!