So Native Americans lease out an area of there land for money to a company. The company purchases and installs solar equipment and computers. Spending their own money or borrowing against other property they own. This is all done at their own risk that bitcoin does not crash. Their own money and asses on the line for this investment. Nothing Native Americans are not capable of doing themselves. The Native Americans are landlords and made a deal to rent land to a business. Now people are upset that that Company is doing well and making money?
It's open land. They undoubtedly reached a reasonable price leasing the land. The business could have probably leased similar plots of land to setup that business for about the same amount of money. Sounds like a win win to me.
Nothing is stopping anyone from doing the same thing including any Native Americans. Raise the capital and build it. Hope the market doesn't throw a curve ball.