Just to be clear (and facetious): you're claiming Adobe isn't in the business to make progress?If Adobe was in business to make progress, I would agree with you. Actually, they would agree with you. I already do. I tend to like changes so long as they are improvements.
Users do not care about sales managers, but if you look at how things work, this is how you quietly and suddenly lose your market leadership position. This is how Adobe InDesign superseded Quark Xpress as the go to solution for DTP. There was a lot of animosity against Quark as a company, and some of Adobe's moves have angered the creative community (although I would not go as far as claiming that the levels of discontent are similar). Just have a look how relieved people were when they found out that Lightroom 6 was available as a traditional software package rather than subscription only. In certain areas the reluctancy to be this risk-taking project manager have cost Adobe (e. g. in the html5 editor arena, because they stuck to Flash for too long).Making big changes to a program is a risk. It may not be to Adobe, but would you want to be the project manager that oversaw a large drop in sales even as one of your competitors dropped out of the market?
Just to be clear: I agree with you, but I feel this is more a problem of incentives amongst the management than anything else. Apple overcompensates a little at times, e. g. when they shoot slightly off course with FCP X.