It's kinda complicated. Some of them lack resources or have bad geography. This is how they were saved from Russian mass migration and are able to keep their ethnic identity. Regions like Chechnya, Dagestan or Tuva are heavily donated by the federal government.

Other regions are reach of resources and have good geography, but flooded by ethnic Russians. Ethnic minorities there are well off but suffer from assimilation. Their languages and culture are dying out.

It's a hard choice. Either you are reach, but everything you love is disappearing, or you are poor but keep going.