Earlier quoted context omitted.
For OS X, the decline began under Jobs with 10.7. I'd always assumed it was simply that Apple no longer cared about computers; in Jobs' own words, “milk the Macintosh for all it's worth and get busy on the next great thing.”
> For OS X, the decline began under Jobs with 10.7 So what issues do you have with 10.11? Because I don't see anything to complain about. Then again, I also didn't see anything troubling in 10.10, 10.9 and 10.8, with the exception of their ill-fated transition to a new DNS backend, which they later reverted. A few bugs here and there, yes. Nothing I haven't seen since 10.2, or that's not comparable to the kind of iss…
Still a total disregard of Fitt's law. Horribly inconsistent keyboard support. Behaviour that should be trivially configurable seemingly set in stone. Still, I think, impossible to cut a file in Finder. However many shots that take, apple can't get WiFi working properly. The transparency is an abomination.
If you want something more 'big picture', I think all the changes introduced over the lifetime of OSX have been a bit piecemeal with no overall, unifying process. For example, full-screen mode gets bolted on, rather than nicely integrated with other window actions. Notifications blossom into a side panel, but there's an overlap with bouncing icons in the dock. Etc. There are some great ideas there, but we could really do with an OS11 that picks the best ones and presents them together, in a clean interface, in which they all belong.