Canada is VERY competitive for film/tv production.  There a re always shows which will move both to & from Canada - some for reasons related to tax credits, others for different reasons.  Film/TV production $$$ spent in Ontario have never been higher - I suspect it's the same in Vancouver.  The bulk of film/tv is always going to be "foreign production" - that's where the most money is. 
But I do take your point about relying on non-Cdn production.  I would much rather work on Cdn production rather than U.S. 'service production'.