Comment by e_i_pi_2

> It’s nuts that personal computers aren’t personal anymore

I think the core driver here is that most people don't want a "personal" computer, they want a device that's able to reliably accomplish tasks. Early computers gave users much more power and control but that also came with the responsibility to set up and maintain the system, which limited the userbase a lot. I'd argue a lot of the security is security from the user against themself - there is definitely some value in trying your best to make sure a user is unable to brick their phone no matter how much they try, because they're likely going to blame you and ask you to fix it afterwards