By Euan Rocha TORONTO (Reuters) - Tech giants such as Google Inc and upstarts like Shopify Inc are rapidly expanding their presence in and around BlackBerry's hometown of Waterloo, Ontario, even as the smartphone maker further pares back some of its teams. Canada's newest tech darling Shopify, which went public this year and is valued at $2.75 billion, will soon announce a major expansion in the region, according to three sources familiar with the matter. A spokeswoman for Shopify declined to comment on the plan.



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