Even if Adobe had gotten their act together and fixed all security holes, Apple would have still killed it. It was always a threat as a popular design tool. And

Even if Adobe had gotten their act together and fixed all security holes, Apple would have still killed it. It was always a threat as a popular design tool. And decades later, with the HTML canvas hype faded, there's still no replacement to what Adobe Flash could do - any designer could create stellar, interactive design that can be embedded into any website...without a monthly subscription.