According to Burrough, Jobs was miffed that Adobe CEO “Shantanu Narayen would not take his phone calls.” As a result, Jobs had zero faith that Adobe would be able to address what Jobs reportedly categorized as “mere engineering problems.”
@bob_burrough couldn't count on them do it. — ᴮᵒᵇ ᴮᵘʳʳᵒᵘᵍʰ (@bob_burrough) December 6, 2016
“One of the things that has irked me over the subsequent years was that people widely ridiculed Steve for this decision,” Burrough later added. “However, the decision was the right one based on both technical reasons and that Adobe was a shi**y partner. Almost a decade later, it turns out that Steve Jobs was right. Flash is dead and Adobe is a still a shi**y partner.”
It’s crazy to think that the entire Apple/Adobe brouhaha essentially boiled down to Apple’s mistrust of Adobe as opposed to any insurmountable technical hurdles.