> And, being forced to open up Screen Mirroring would reduce its value as a moat, since someone would presumably be able to build an Android client quickly and with no reverse engineering work.
Which is everything wrong about current Apple. How far the Apple has fallen off the tree. Back in the resurgence of the Mac after Steve Jobs returned, the policy was to make everything as open as possible, now it's entirely the reverse.
If the iPhone/Mac were a competitive product as they are, there would be no need to retort to that sort of shenanigan, the whole thing would be openly documented but implementation quality would be the deciding factor.
It is not surprising that Apple doesn't want to compete because they wouldn't necessarily win, before even talking about price.
In any case, while it's a nice feature to have, it can only be considered worthwhile because all of Apple's strategies for convergence have failed pretty hard (after mocking Microsoft) and there are now too many annoying things you need to do specifically on a smartphone (because of Apps, Auths, or other nonsense of the sort).
If anything, it is extremely dumb (considering the price and marketing around ecosystem) that you cannot just use whatever data is on the phone but with correct desktop app implementation even (and especially) for Apple first party app.
As a Mac user that is getting old (I remember System 7 from my youth, and I used System 9 for a bit) I feel extremely saddened that we are now celebrating what is basically a custom implementation of VNC/Remote Desktop for a completely locked device/OS.
This feature was considered essential/basic 20 years ago, having to use it to access a limited device because a company can't figure out proper convergence, largely out of pure greed, is really not something to be happy about.
I'm sure one day they'll figure out how to make a Mac App to properly exploit all the health/sport data of their very expensive Watch products (that require an iPhone for no good reason).
But when this day will come I probably won't be a customer anymore so whatever...