The growth rate of descendants becoming shareholders is incredibly small. In our own corporation, I counted only 9 new shareholders per year. The average age of the original shareholders in 2016 must be somewhere around age 62-100. Alaska Natives don't live that long. In fact, life expectancy is around 75 yrs. on average. New shareholders receive diluted shares because they are split among siblings. No one has ever done a study to find out how old the original shareholders were at the time of the ANCSA. No one has done a study to find out how many children, grandchildren, great grandchildren descendants they have. Original shareholders hold onto their shares for life, only passing them on when the next generation is also a senior citizen. Meanwhile all the kids are getting educated and unable to contribute until they are senior citizens past their prime. A small percent whose parents died younger are running the corporations. This breeds inequality and unfairness leading to extinction.