This week I am doing some freelance work for The Written Word who are paying me to (try to,
sometimes) port libsigc++, glibmm, and gtkmm to various crufty brands of Unix and their compilers, starting with SUN's Forte C++
The Written Word provide pre-built packages of various free/open-source software, with a convenient package-management system. I think there must be a big demand for this, because building from source is a difficult waste of any company's time. I know that anything other than simple is beyond most large companies that I've worked for.
And most of those large companies really want to pay someone for CDs and some kind of contract when they decide to use a certain development platform.