And if France was muskeg.
Which is the reason why, in Ontario anyway, the government will no longer approve permanent settlements around new mines, because they are stuck servicing the infrastructure. Any new mine that is not without a reasonable distance of an existing community (Victor, Detour, Musslewhite, etc.) are just modular with itinerate shifts.
One problem with youth leaving an isolated reserve is it becomes a dispora of mostly unskilled people with limited social supports, much like what already happens in many large urban centres, and the first nation societies have an increasingly weaker ability connect with the land they claim as their traditional territory.
One hundred and fifty-odd years ago, they primarily lived a nomadic or semi-nomadic, land-based, season-influenced lifestyle. Now they live in houses. In terms of social anthropology, that is lightning fast.