Sure, BlackBerry and Windows Phone could've maintained Adobe's support for their platforms. But that would've been expensive, a poor user experience (like Andro

Sure, BlackBerry and Windows Phone could've maintained Adobe's support for their platforms. But that would've been expensive, a poor user experience (like Android's version) and depend entirely on Adobe continuing to allow access to their source code and distribution of the flash player. No matter who you want blame however doesn't change the fact the Flash isn't ubiquitous. It's ubiquity always depended on a single vendor supporting it on every platform.