Google's expansion plans show why Canada's tech boom is here to stay

The cheap labour pool as a consequence of the weak Canadian dollar certainly helps, alongside having identical time zones and nearly identical culture to the United States. Lots of Canadian consultancies butter their bread with USD.

Or Bay Area cost is out-of-reach even for Google

I often see people framing the US & Canada primarily as a competition in tech. The exact opposite is largely the case. The US benefits enormously from having a wealthy, vibrant Canada, including in its tech sector. We're permanent allies, liberal democracies and share a very large border as well as $600 billion in goods trade. The ability for technology, labor, products, services and capital to freely flow back and forth between the two of us makes us both far better off. Canada prospering in tech, rather than taking away from the US, brings more to the US-CA economic zone, including any talented persons they import that the US doesn't. There is more than enough tech riches to go around, the US doesn't need to own everything and shouldn't try to.

If anything the US should be directly helping Canada to boom in tech. Enlarge the regional blackhole, suck up all the world's talent. They're our largest export market, the richer they get, the more people they have, the more US exports they are likely to buy (and vice versa). Canada's tech talent will occasionally also go south and start companies in the US. Canadian investors can fund US start-ups from their successes. US investors can back Canadian start-ups and public companies. The more the merrier.

Indeed, Toronto is more expensive than most places Google has an office in, except Bay Area itself and maybe NY.