NB: My original post was before we'd all got the news on what Apple is
actually doing in the EU - that's being discussed in other threads & let's keep it there. This thread was about actual "sideloading" (i.e. diretly installing Apps without a Store) and/or
truly independent app stores that aren't regulated by Apple.
Some Mac users choose to not install apps from outside the Mac App Store.
Which suits some Mac users and not others.
Macs are not iPads, Macs are not iPhones and iPhones are not iPads.
Mac has a 40 year history, and for most of that time there was no word for "sideloading" because that was the
only way of installing software. The Mac App Store is a fairly recent addition and certainly doesn't cover everything I want to do
on my Mac - which includes a certain amount of small-scale development, tinkering and using Mac OS as Unix, and maybe even re-purposing my current Mac as a Linux box when I come to upgrade. That's been the deal with Mac all along, and if/when Apple goes too far towards locking down the Mac, I'm out.
The iPad has never promised anything other than the App Store. It's always been an "appliance" for running approved software.
The iPhone originally had
no way of installing third-party software
at all - the word of Jobs was that you could use online web apps. Had mobile broadband coverage been better back then, that might have been the end of it... When the App Store arrived it was the only way there had
ever been of installing third party software. Also, the mobile phone is rapidly becoming the go-to device for security and ID verification (...often providing the second factor in 2FA even when you're using a Mac) so keeping it locked down makes more sense. There's now more potential for chaos from a pwned phone than a pwned laptop/desktop.
But if you want to install an app that Apple doesn't want in their store, how could having the option be a disadvantage?
Offering options has wider consequences: so far, anybody who wants to distribute iOS software has had to use the Apple store. If alternative app stores appear, or sideloading beomes popular, then, inevitably, some Apps will move there, either because the developers think they can make more money or because they are easier to develop for. Using alternative stores/sideloading could rapidly become "optional" in the sense of "running the software you want/need is optional".
- Why would you sideload untrusted apps onto any device?
Because what sideloading
is... and, generally, that is how you get alternative app stores onto (say) Android or MacOS (I don't see Steam in the Mac App Store, for example).
Long is the list of stable OSes that are fully open to external application installs that many people, including lots on these very forums use every single day without issue. iOS would be no different.
...and if we were talking about ways in which Apple were stopping people from running Linux, Android or Windows on their Mac/iPad/iPhone hardware, you might have a point. AFAIK, all that is preventing
that is scarcity of user-friendly, well-supported distributions - it's not Apple's job to provide those.
There is also what I call the Macrumors Irony, that the very same users who protest about the EU telling Apple what they can and cannot do with their devices also allow Apple to tell them what they can and cannot do with their devices.
If I want to sideload apps or run alternative app stores I am free to choose Android or some other system. I'm
also free to moan about it, or about Apple's RAM prices, the notch, the power connector on the Studio Display or whatever - but that doesn't mean I want the government or the courts to come and make it all better for me (and, remember, its not just the EU, Apple have been fighting lawsuits about this sort of thing in the US, too - its a different means to the same end). "Buy something else then" is a lazy argument when you're trying to debate the merits of something but it
is your ultimate recourse.
The authorities have a role when consumer choice is under threat, but there's plenty of consumer choice in the mobile device market. A bigger worry is keeping an eye on Google/Meta/Amazon/Microsoft et. al. who are closer to having dominant platforms in their markets
and lots of opportunities for "leverage" - e.g. Google's role in search, mobile OS
and advertising. The War on Apple seems a bit like a distraction.
C.f. Apple wanting to sell its own services on its own hardware platform with Google's history of
forcing its apps & search on mobile networks and manufacturers making phones using the supposedly open-source Android OS. Not arguing that "two wrongs make a right" here, but which sounds like the bigger threat to user choice? Also, the EU was able to go after Google for that under existing anti-trust laws, it didn't have to write a new directive. One of the tests of EU policy will be to see how well it deals with other big tech players.