I would say there is a substantial amount of users willing to install off-play Store .APKs. Substantial enough they're also willing to take a 'jump' and accept the risks/errors displayed
I think one can still build a product that has a level of guard rails without impacting usability.
I also think iOS is more of an opinionated 'set of shears'. E.g. 'Right Hand only Scissors made from proprietary parts, made to only cut objects that 80% of scissor users need to cut' if we were to go down the road of analogies.
Funnily enough Google Android is removing the ability for unsigned non-adb APKs. I would suggest your 'regular' scissors will be slightly bluntened in the upcoming Android 16 OS release.
I wish they removed a lot from Windows... for a consumer user. Installing Prof/Enterprise editions and there is still bloatware installed, it is so unappealing!
You can, but most people go to a shoe store and check out different brands. Most people that end up buying Nikes aren't the people that only buy Nike and know what they want without trying on a few pairs.
Like unless you just know you specifically want some Nike shoe you aren't likely to visit Nike.com to buy shoes.