No? If I started a company in Canada tomorrow, why would I reduce my talent pool and not look at the US? Most startups are eschewing offices in an obvious move for cash-strapped businesses. If you're hiring remote then borders should be a mild nuisance at worst, and at best a force multiplier.

Example: Show me a startup in the YC job board based in Canada (there are many these days) that is hiring locally only for software engineers.

Shopify did hire talent from Europe years ago. I would see them on every bigger networking event with glossy flyers about how they will pay for everything if you want to move and work there.

Europe is not equivalent to the US. Granted, it's outside Canada, but it's probably even cheaper than Canada.

Shopify should not be considered a tech company. Ecommerce in general isn't a technology problem. Just to give you an example of how comically small fintech is here is a global example: Visa processes around 1,700 transactions per second.

Shopify does not pay well