http://xmr.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/opsec/openhardware/index.html
Profit companies don't want to share their production secrets just like software companies to avoid competition and soak up all the profits they can get. Let's look currently at what's the status of hardware on the market, are there that many open source options ? In short, no, the market is currently utterly dominated and saturated by these profit companies, which are all selling closed-source hardware.