Even still, anti-virus and movie maker are not default installs (and not even delivered on the install media) which is at least partly attributable to MS still being hesitant to cross that line.
I seem to have movie maker installed and I certainly didn't download it.
Possibly it came down in a Windows Update (I tend to just say "everything") but if that's the case it's surely only the finest of whiskers away from being a default install.
Even still, anti-virus and movie maker are not default installs (and not even delivered on the install media) which is at least partly attributable to MS still being hesitant to cross that line.