In the US, there are programs where various federal agencies will pay for your education, and offer you a job on graduation. At a high level, the terms require you to repay the cost of education (prorated) if don’t work for that agent for a certain period of time.

I can see this working in Canada (or other states that want a boost in educated citizens). Subsidize education via forgivable loans, then forgive the loans if you work in-state. The main issue I see is that the US has a terrible history with loan forgiveness. You always hear stories of (eg) teachers who should get their loan forgiven being rejected for some paperwork issue or simply bank fraud.