Just my opinion but I would say that’s fair. That’s such a bad idea if you care about profits and wide exposure that there’s almost no economic incentive to sell a book but exclude selling it on Amazon or B&N, you’re just throwing away money. Which, in a free market, you should be able to do at your own discretion.

The problem only comes if the biggest players in the space use their power and influence (read: money) to keep smaller competitors from having a chance.