That's why I suggest moving all free-license pictures over to Commons as soon as possible.
That wouldn't be a bad thing. But remember that it's not as simple as 'free' and 'non-free'. We have *a lot* of images which are in the public domain in the United States but not elsewhere. Last time I mentioned the Bridgeman images as an example. Here's another:
http://en.wikipedia.org/wiki/Image:Hundingsbane.jpg
This image is in the public domain in the United States but under present law the copyright will hold in Europe until 2046.
Regards, Haukur