You say "freeloading". I say "participating in a rich culture of shared work". Maybe I don't contribute all my local work to Emacs upstream, but I push out a lot of Python stuff. Maybe you don't bother sharing all the Python tweaks you've made, but you're an active Vim contributor. Perhaps there's someone else that's a Vim "freeloader" but who cranks out a lot of kernel code that you and I both benefit from. I think that's a healthy, mutually-beneficial arrangement.