Even if the Canadian government spent 30 years studying a pipeline proposal and consulting, there would still be first nations and their lawyers (and US-backed enviro groups) arguing that the consultation period was inadequate. 

If a band is just saying "no" and will not engage in an active discussion on a project and just "lawyer up", it is pretty hard or impossible to consult and talk about accommodation. Let's hope the Supreme Court recognizes this. (The lawyers, of course, always win from these protracted processes).