There's a lot of great work helping students to get work experience all across the country. The short answer to your question is because we can reduce the duplication of efforts.
In so much work that happens, especially in local communities, things start from zero. They build a thing from nothing into something, and that, as we know, is the hardest to do, whereas when sectors or different parts of the country work across and have a mechanism through which to coordinate and collaborate—a hub-and-spoke model, if you will, a centralized hub that can create resources for any employer—then we can understand that the specific employer needs in Newfoundland, for example, are different from those in B.C.
We can do the bulk of the heavy lifting and provide those resources to the local community or chamber, and they can customize for that last 20%. Everyone then is learning from each other across the country and building on the work of others without having to always start from scratch.