In order to answer your questions, you have but to research what happened to the tribes in the lower 48. They were actually imprisoned on their reservations. The US had a Termination policy that was designed to extinguish Native people. It worked to a large extent!

Think about what the Alaska Natives are saddled with now in the way of logistics and logistical support. It's very difficult for them to even move their village these days because of power requirements, waste facilities and fuel for modern life. Mobility is their limiting factor but included in that scenario is imposed harvest quota's. If they can't catch fish because of imposed laws of the state, what can they do and why is that? It's very difficult to fix what 300-500 years have done and maybe it shouldn't be fixed at all. However, I think it explains the difference between now and then.