They are already buying a locked down phone most of the time. And they already want this! (Unfortunately the bootloaders are locked, as far as I know.)
Developers want developer phones, non-developers want safe phones that are resistant to their and their shitty bank's goddamn fucking stupidity. (Because banks UX is so so so so bad that most of the time the phishing attack seems like just a normal part of the bank's UX.)
But it's hard to separate people on a webshop, if a shop runs out of non-developer phones they'll happily sell the developer phones to non-developers.
It's either that or as suggested, hard require developer validation for specific API permissions.
It is unreasonable to require a payment for people to use their own phone the way they want
They are already buying a locked down phone most of the time. And they already want this! (Unfortunately the bootloaders are locked, as far as I know.)
Developers want developer phones, non-developers want safe phones that are resistant to their and their shitty bank's goddamn fucking stupidity. (Because banks UX is so so so so bad that most of the time the phishing attack seems like just a normal part of the bank's UX.)
But it's hard to separate people on a webshop, if a shop runs out of non-developer phones they'll happily sell the developer phones to non-developers.