If there was one company that had any chance to stop Apple from growing it would have been Adobe. Prior to the success of Android, Adobe had the potential to really hurt Apple. Many believe to this date the reason why Apple chose not to support Flash was due to poor performance and lack of optimization on a mobile platform. Although this is partially true, the biggest reason why Mr. Jobs really wanted Flash to die was the fact that it would really put a dent on Apples App Store.
If Apple would have supported Flash like they should have, developers could have easily created apps, and games that could have bypassed the App Store therefore, losing revenue from potential sales. Just imagine, being able to play awesome games from a website without having to download an app, for free on your mobile device. This was Jobs biggest fear after all, the iPhone played a huge role in the growth of mobile development. Apple wanted full control of the mobile space and the only company at that the time that posed a threat was Adobe.
I sometimes wonder, what would have happened if Apple would have supported Flash development. Would the web we see today be different? HTML5 is very mature and most browsers support it, but it’s still limited to what you can do when it comes to creating a rich web experience.