The shareholders demand maximization of profit. By not accepting Bitcoin, amazon is not maximizing profit, and that is breaking the law.
Every publicly-traded corporation MUST maximize profit to shareholders, this is in their LEGALLY BINDING CHARTER. I'm sure they are just waiting for the legal-fog to clear.
It is literally malfeasance for a corporation not to do everything it legally can to maximize its profits.
We have a recent incident when a conservative thinktank NCPPR lost when trying to force something like that on Apple in an annual shareholders meeting and even they did not claim there is anything in law against a company doing whatever the company wants to do which means whatever the majority of shareowners want the company to do.
http://www.businessinsider.com/tim-cook-versus-a-conservative-think-tank-2014-2the NCPPR representative asked Mr. Cook to commit right then and there to doing only those things that were profitable.
What ensued was the only time I can recall seeing Tim Cook angry, and he categorically rejected the worldview behind the NCPPR's advocacy. He said that there are many things Apple does because they are right and just, and that a return on investment (ROI) was not the primary consideration on such issues.
"When we work on making our devices accessible by the blind," he said, "I don't consider the bloody ROI." He said that the same thing about environmental issues, worker safety, and other areas where Apple is a leader.
As evidenced by the use of "bloody" in his response—the closest thing to public profanity I've ever seen from Mr. Cook–it was clear that he was quite angry. His body language changed, his face contracted, and he spoke in rapid fire sentences compared to the usual metered and controlled way he speaks.
He didn't stop there, however, as he looked directly at the NCPPR representative and said, "If you want me to do things only for ROI reasons, you should get out of this stock."