For me, a better comparison would come from France. Like, how many skaters have there been in recent years that the FFSG refused to release?!
Tiffany Zahorski and Bruno Massot come immediately to mind as they are the most high profile. But I am nearly sure there were others.
Admittedly, Tiff and Bruno were eventually released, to huge publicity. But this was only because Didier Gailhaguet was now running for the ISU Presidency, and wanted to do something that would show him in a good light, and distract from his involvement in the 2002 scandal.
Sorry for being so cynical.
Anyway, although the FFSG does not have control over all aspects of their skaters lives like the CSA seems to, it is probably the best comparison for refusing to let their skaters take up opportunities of representing other countries.
CaroLiza_fan