FutileRecipe

Depending on where you go to school, 70% is passing while 50% is not. While "not far off," one is a C, the other a F.

they overspend by millions

Because everyone needs their cut.

either way a military tank is better than a civilian grade sedan.

Because they're two different vehicles, not two different classes of product. If you compare military grade phones to civilian phones, the civilian would be better, and probably cheaper due to not having the buzzwords attached. And I bet a tank made by a private firm for non-government entities would in fact be better and cheaper than a military tank.

These things will very likely not work on non-proprietary devices.

Depends on your bank. Most work on alternate OS (like GrapheneOS), and of course some don't. https://privsec.dev/posts/android/banking-applications-compatibility-with-grapheneos/

If an app (especially bank) doesn't work, I forward them this and try to ELI5 that their current method is flawed and less secure: https://grapheneos.org/articles/attestation-compatibility-guide