Apple didn't even have an AppStore in mind until people started hacking apps onto it.

Remember back in 2007 when Apple first told developers that to develop for the iPhone, they’d need to build WebApps for Safari? Well, that really was the plan. At the time, Jobs said:

    The full Safari engine is inside of iPhone. And so, you can write amazing Web 2.0 and Ajax apps that look exactly and behave exactly like apps on the iPhone. And these apps can integrate perfectly with iPhone services. They can make a call, they can send an email, they can look up a location on Google Maps.

    And guess what? There’s no SDK that you need! You’ve got everything you need if you know how to write apps using the most modern web standards to write amazing apps for the iPhone today. So developers, we think we’ve got a very sweet story for you. You can begin building your iPhone apps today.

The App Store came later and apparently as a reaction to jailbreakers and developer backlash.

https://9to5mac.com/2011/10/21/jobs-original-vision-for-the-...

Jobs hated Adobe:

According to the biography, Jobs’ longstanding animus toward Adobe helped form his vision for Apple’s tightly controlled mobile environment.

In 1999, he was flatly denied when he asked Adobe to create a version of its popular Adobe Premiere digital-graphics software for the Mac. Adobe also wouldn’t rewrite Photoshop for the Mac’s operating system, even though Macs were popular with designers.

“My primary insight when we were screwed by Adobe in 1999 was that we shouldn’t get into any business where we didn’t control both the hardware and the software, otherwise we’d get our head handed to us,” Jobs said, according to Isaacson.

The two companies go back together even further. Apple invested in Adobe in 1985 and they worked together early on. But Jobs, who in Isaacson’s book comes off sometimes as vindictive and brusque as he was innovative and inspirational, told Isaacson that Adobe went downhill after founder John Warnock retired.

“The soul of Adobe disappeared when Warnock left,” he said. “He was the inventor, the person I related to. It’s been a bunch of suits since then, and the company has turned to crap.

https://edition.cnn.com/2011/11/09/tech/mobile/flash-steve-j...