I think the problem of staying on a version of Photoshop has existed for a long while. I agree Creative Cloud is a big misstep, but surprisingly to me some artist friends really like it.
So you can see the logic behind Creative Cloud: Adobe have both prevented this behaviour, and struck against piracy. They're clearly betting that this will outweigh the reduced sales, and that Photoshop/Illustrator/InDesign are so essential that few people will pass it up. I'm not convinced they're right.
A known torrent site begs to differ!