Sorry, your strategy by asymmetry of the monetary forces involved can not work out for Canada.

What really prevents braindrain on a large scale is stationary opportunity's.

Take Shenzhen for example, it is one ocean away from California and should be constantly bleeding out towards it. The contrary is the case, due to the relatively cheap and flexible factories of hardware- being opportunities for which California cant or wont any longer compete.

But shouldn't all these Chinese hardware founders create fab-less hw-design companies and mass-migrate? No, because connections and opportunities would not migrate with them.

Such opportunities are usually created by long-term protectionism and clever industrial policies.