Jeff, thanks for the slide show link, but...
wait, wait, wait a minute...we can make charts about projections, guesstimates, and wishes to say and hope for anything we want...doesn't make them true, or even slightly accurate. The only charts that can be accurate are charts of the past. Right? And even then it depends who is giving the info and checking to see that the info is true. Also, if Adobe kills the perpetual license models, what else can one expect besides no income from them? It's their wish, hope, and who can blame them for making charts to show this. All they have to do is make Lightroom and Elements subscription only and there you go, no income at all from the old, 'loved' way of doing business.
Ok, 'loved' my projection of the past. I'm allowed to dream, no? fond memories, all that, as I slowly ponder what to use when my copy of CS6 and Lightroom no longer work with my computer. See. I'm part of the decreasing perpetual license revenue.