That is almost entirely backwards.
> For Flash vs iPhone case, it was indeed mostly politics.
It was politics in the sense that Flash was one of the worst cause of instability in Safari on OS X, and was terrible at managing performance and a big draw on battery life, all of which were deal breakers on the iPhone. This is fairly well documented.
> iPhone was released in 2007 and app store in 2008. iPhone and iPad did not support then popular Flash in their browsers.
There were very good reasons for that.
> Web apps were not a thing without Flash.
That is entirely, demonstrably false. There were plenty of web apps, and they were actually the recommended (and indeed the only one) way of getting apps onto iPhones before they scrambled to release the App Store.
> Flash ecosystem was the biggest competitor and threat for the App Store at that moment.
How could it be a competitor if it was not supported?
> iPhone users stopped complaining
It was not iPhones users who were complaining. It was Android users explaining us how prehistoric iPhones were for not supporting Flash. We were perfectly happy with our apps.
> and in 2011 Adobe stopped the development of mobile plugins.
Yeah. Without ever leaving beta status. Because it was unstable, had terrible performances, and drained batteries. Just what Jobs claimed as reasons not to support it.
> Adobe was in a unique position to dominate the apps era, but they failed spectacularly.
That much is true.
> Plugins were slow but this was mostly due to hardware at the time.
Then, how could native apps have much better performance on the same hardware, on both Android and iOS?