Why the NVIDIA graphics driver should be available in repositories

It's not that big of a deal, but would it really be that big of a problem to deliver a proper .deb package for the driver installation? I had to let the Nvidia installer disable my Nouveau driver, I had to manually stop LightDM and I also had to correct the /usr/bin/gcc link, since Nvidia apparently doesn't care about my CC environment variable.
sudo service lightdm stop
sudo rm /usr/bin/gcc
sudo ln -s /usr/bin/gcc-4.6 /usr/bin/gcc
What's up with that?