Amazon v Visa

I am incensed that a large company such as Amazon want me to change my method of payment - namely a visa credit - card as they feel visa charges are too high. This coming from a multi-million dollar company is almost comical.
It is nice to know that unlike many small internet businesses they put profits for the share-holders before customer convenience. I cancelled my account and they did not even enquire why. Maybe if other Visa users did the same they may take notice.