Remote work could accelerate the tech industry's migration to Canada, where affordable costs of living and more open immigration policies are helping create tech hubs to rival Silicon Valley

· Facebook and Twitter's new remote-work policies have prompted SF Bay Area workers to begin considering leaving their homes. 
· Some may choose to cross the border to Canada, home to some fast-growing tech-hubs thanks to easy immigration policies, and affordable costs of living. 
· A survey by Envoy Global, a firm that...