0: https://docs.microsoft.com/en-us/windows-hardware/drivers/da...
(thankfully MSFT is indeed working on their own first-party code signing solution https://youtu.be/Wi-4WdpKm5E)
No, because I would have never used macOS if there were limitations that prevented me from being able to do my job. And imagining a world where Apple restricted macOS in such a way is a rather unlikely hypothetical.
The big difference is that iOS has _never_ had these capabilities. Many people have opted into the current model of iOS because they don't consider it a general purpose computing device - they consider it a phone, an iPod, an internet browser, or an angry birds player.
> Can you imagine using Ubuntu without apt because everything has to come from the Canonical's software center?
No, for the same reason. Their customer base would refuse to upgrade, servers would be migrated off, etc.
A closer equivalent there to the current game app stores would be always-on licensing servers which used physical dongles - the game stores are running basically as licensing servers. And professionals _hated_ these. Even software-based licensing servers over the LAN is much less common in professional software these days.
While it's true that apps for PC game stores often double as DRM, I don't think that's relevant to a discussion of whether or not Apple should be compelled to allow for third-party app distribution platforms and the "side loading" of apps on iOS.
After all, there is little stopping you from implementing always-on DRM on an iOS app. You'd just have to implement it in the app directly, which is how PC games used to do it before modern platforms became popular. The rise of those platforms (Steam in particular) had a lot to do with the downfall of oft-maligned DRM solutions like SecuROM. Software-embedded DRM tech like Denuvo are still a blight on PC gaming, but they're at least less common than they once were.
See SetApp for MacOS and for iOS:
Obviously never going to happen, but it'd be a much nicer ecosystem if it did work that way
Do you honestly think this is a worse scenario than having to buy all of your apps/games through Microsoft's app store? Can you imagine using macOS without homebrew because everything has to come from Apple's app store? Can you imagine using Ubuntu without apt because everything has to come from the Canonical's software center? Even Android is made slightly more tolerable by the existence of F-Droid.
Being able to use your preferred software manager/store for everything would be nice, but I don't know of any platform that lets you do that. You either have to deal with multiple software managers and use your preferred one as much as possible, or you're stuck with whatever the platform forces on you. I definitely prefer the former.