The twelve regional Native corporations are still here, so they have been successful, per the intent of ANCSA ... Greed, nepotism, self interest are the marks of every organization ... The "thousands" of non-Natives who hold stock, don't have voting rights ... The AFN, IRA villages, and "heritage" departments of the corporations take care of most "public" issues.  ANCSA was a compromise, and we got what we could, while we could.  And the Clans, the Ruling Families, still rule, per the "ancient traditions" that so many have professed that they're so fond of.  You want assimilation?  Then over-throw the Clans.  You want tradition?  Then live with it.  You want a future?  Then learn to keep "corporation" and "clan" in different compartments ... just like you keep business and personal bank accounts separate.  My corporation handles corporation stuff for me.  Grandma handles tribal stuff for me.