Jobs can't be happy about that: An iOS developer told it was likely that the FTC forced Apple to allow third-party programming languages because the restriction reeked of anti-competition. So Flash has made it to the iOS platform in a roundabout way. That effectively opened doors to Adobe's Packager for iPhone, a tool in Creative Suite 5 that enables Flash to be easily converted into native iPhone app language. In September, Apple revised its developer guidelines to allow third-party programming tools to be used to develop iOS apps. However, Apple failed to completely block Flash from the iOS platform. We don’t want to reduce the reliability and security of our iPhones, iPods and iPads by adding Flash.'
'We have been working with Adobe to fix these problems, but they have persisted for several years now. 'We also know first hand that Flash is the number one reason Macs crash,' Jobs wrote.
1 reason that Macs crash, and Adobe still hasn't made any major improvements. There, he explained that Flash wasn't technically up to par to perform well on mobile devices such as the iPhone and iPad, and supporting Flash would stifle Apple's ability to innovate. Apple's grudge against Flash is thoroughly explained in a web post written by Jobs in April.