I can't see one there.
The successful SAS story of Adobe is the appearance of Serif's Affinity Photo as a good alternative of PS/LR, Illustrator still has a good alternative in Corel Draw and Acrobat Pro has one time purchase option, because there are literally tens of other PDF editors and OCR software around. The innovation around PS ended with the introduction of their SAS model.
Office 365 is not that of a success story (Microsoft Windows is the success story of Microsoft, Office has many viable alternatives therefor it still has one time purchase option) and iZotope is too niche to dream of becoming the next SAS giant. The successful subs stories I think are mostly linked to NY Times, WaPo and Netflix. Of course there still are enough people jumping on the subscription train, giving lifeline to parasitic corporations. Everyone's free to spend their hard earned money how they like.