Billy Ray Powers,
Firstly, are you aware that there are lower 48 tribes who qualify for the federal 8 a program ? 
They are not set up the same way as Alaska Native Corporations were and some of the tribes have extreme poverty. 
Secondly, not all Alaska Native Corporations are "big" and advantaged. While the Corporations where oil, gas and other minerals have made "headlines" there are the other Corporations that have not fared well at all under the "Corporation" model that was imposed upon them. It was totally a foreign concept to most of the people. Like expecting you to understand and speak Greek fluently while performing brain surgery. 
Thirdly, yes there have been abuses of the contract program but if you investigate you will find that most of those abuses were made by people hired for their knowledge and skills because few Alaska Natives had the education, experience and skills needed in the corporate boardroom. This resulting in outsiders pulling the wool over stock holders eyes