A big factor in the success of the iPad and maybe just some degree the iPhone, but especially the iPad, is that it’s “unbreakable”. All out restrictions mean it’s computer people don’t worry will suddenly stop working because they clicked to the wrong link. It won’t get a weird virus from their email.
They could allow unlocking the phone by burying that option deep in the settings with scary warnings etc. Most people could use the device with the restrictions. The fact that this is not possible at all is greed.
If they did that, every influencer would make youtube videos and tik toks telling people how they should enable that setting to make their phone better or more powerful "for free", and everyone would just do it, especially the people who really shouldn't because they don't know any better.
No they wouldn't. We don't have to speculate about that; Android already has a toggle to allow direct installation of apps, and most people don't turn it on.
Many Android devices allow unlocking the bootloader and gaining root or installing an alternate OS without exploits, and there are quite a few third-party Android builds for supported devices. The process is not beyond what a person of average intelligence and modest computer skills could pull off with some patience and a video guide. Only a handful of tech nerds actually do it.
MacOS does more than just give you a warning when you're opening a program not vetted by them -- it prevents you from opening it, so that's not really a good example of education, and is in fact an example of lockdown.
I'm not arguing that anything get any more locked down than it already is, so your points (while possibly valid in a bigger discussion) don't make a lot of sense here in this discussion about a hypothetical "unlock phone" setting.
I feel like that same reason is why you see a lot of seriously tech-savvy people try to use iPads as laptop substitutes over and over even though they're obviously still not suitable for it for technical tasks. There's a lot of latent appeal in "okay, what if I just didn't have to worry about any of that ambient technical crap?".
A big factor in the success of the iPad and maybe just some degree the iPhone, but especially the iPad, is that it’s “unbreakable”. All out restrictions mean it’s computer people don’t worry will suddenly stop working because they clicked to the wrong link. It won’t get a weird virus from their email.
That is a serious upside for a lot of consumers.