Do we think there's a big enough market, and enough demand to make it profitable to create open source hardware?
Some people are working hard to make this happen and there is already a lot of open source open OSHWA certified hardware and computer components, that is how Passport and Trezor got certified.
There is also RISC-V chips that are alternative for commercial widely used AMD and Intel chips, they are open source and you can even find RISC-V boards and whole computers.
It is still early to say for sure, but I can see a future with this being used everywhere as alternative for more popular solutions we have now.
Let's not forget that Trezor is also working on their open-source-ish chip that should have general use case for many other devices, not just for hardware wallets.
Take phones for example, the charging ports changing every couple of years, specialised ports being made to make it difficult for cheaper brands to replicate, removable batteries now a thing of the past, all to make sure that you continue buying new hardware, but not just that buying hardware from those that are putting these restrictions in their products in the first place.
This is not the case only with smartphones, but with laptops and netbooks also, even for professional machines.
They are integrating batteries and few years ago they removed option to separately upgrade and change CPU's, so most of the things are now soldered on board.