The only folks who may feel Canadians produce inferior material are those who don't watch or listen to it. Which is certainly their right.
Talent being pretty much spread equally randomly about the world, it isn't nationality that makes superior art. It's opportunity, and that includes the opportunity to fail and try again.
With ten times the producing opportunities just across the undefended border, dumping their excess production on us, our artists are in the same situation as say a shoe factory in Saskatoon whose entire production is swamped by a day's overrun from a giant US plant. That sort of dumping's outlawed by NAFTA for physical goods, like the paper in a book, but not for the content.
ACTRA and the others aren't proposing to stop anyone from accessing any content they want, just to make sure the local producers aren't buried under the cheap crap (already bought and paid for down south) that gets foisted on us at the bargain basement rates our providers—who used to just steal the stuff—are used to.
