Metaprogramming and Free Availability of Sources

[Richard Stallman]

    On the other hand, in the absense of copyright, most people would release 
    their source code voluntarily, because they have basically nothing to gain by
    witholding it

I wish that were so, but we already have problems with binary-only
software that works with GNU/Linux.  For example, there are non-free
device drivers and non-free X servers.

I can also imagine non-free programs that talk to a remote server and
send you-don't-know-what information about you to them.