I do not know. I thought their housings were made of stronger materials rather than cheap plastic, like most USB drives. At least that's what the Trezor looks like to me. But I understand your point, more extra parts probably means a higher risk of failure.
Trezor is all plastic, except for Corazon.
I guess you never in your life saw metallic USB drives from Kigston, Samsung, Toshiba, Sandisk and others
But that would mean you have to disassemble the device to install it in a new case? I'm not sure this is a viable option for the average user.
Yeah sure I guess it is more viable for them to pay €506, €844 or €1,688 for Corazon Trezor that has 100% identical inside, than to spend few minutes to open, destroy old plastic case and print your own metallic case.
Trezor even have
instructions for making your own wallet and there are bunch of 3d stl files ready for printing:
https://github.com/trezor/trezor-hardware/tree/master/case/trezor_oneYou don't take apart a Trezor device in order to build a new one. You purchase the needed parts online and assemble a working hardware wallet from them.
I mean if you want you can always destroy the case for Trezor you have if you are not good in making one yourself
The Trezor chassis is sealed using ultrasound. Opening Trezor without destroying the case is nearly impossible.