This could be what finally forces Amazon to open up its Kindle ecosystem

For a long time, the Amazon Kindle has gone unchallenged on a serious level. There were e-readers launched prior to the original 2007 Kindle model, and many competing devices have shipped since — but in the US and Canada, those rival products have typically become also-rans in terms of sales. While it’s perfectly viable to buy a Kobo or a Nook, the default e-reader for the masses is a Kindle.