Softwares without source code - no tag?

[Cem Kayali <cemkayali%eticaret.com.tr@localhost>]

Hello!

I'm aware of that, NetBSD pkgsrc installation scripts requires 
acceptable_license variable in mk.conf or command line if there are 
license restrictions. Almost all of closed-source / binary softwares 
have license restrictions, and requires user to accept license (ie; 
www/opera), as clue, but 'i assume' there are some without license 
restrictions but without source code - distributed in binary format only.
 
Tonight, I was searching through pkgsrc/distfiles and noticed that 
'devel/py-setuptools' downloaded 'setuptools-0.6c6-py2.4.egg' binary 
file. I know, the origin of the file is from an free-software project, 
but this is somehow annoying.
         
I would like to know, whether there is/could be a tag for closed-source 
/ binary softwares. As far as i know, there is no such tag. Also i 
noticed that NetBSD pkgsrc page says 'It (pkgsrc collection) is used to 
enable freely available software to be configured...' using the word 
'freely' which means free to use and open-source (with source code). A 
non-free software should be tagged i think.
 

Forgive me if this issue is out-of pkgsrc concept and principals... I 
searched through FreeBSD ports documentation and they do tag only 
license and distribution restrictions.
 
Regards,