Adobe had it working on mobile... arguably badly. See Flash on Android. Apple said 'no, you're not going to run that on our platform'. With Flash no longer b

Adobe had it working on mobile... arguably badly. See Flash on Android. Apple said 'no, you're not going to run that on our platform'. With Flash no longer being ubiquitous, it effectively died rather quickly after that. It can be argued that this probably would have happened anyway with Javascipt engine performance improving rapidly and web standards beginning to provide media functionality that had been missing etc. However, it was Apple who stopped them cold and greatly accelerated its demise rather than hanging in there for another decade or more.