Highly unlikely considering it also contains the secure enclave and considering it's PKI-based security you will only ever get chips that are matched to a seria

Highly unlikely considering it also contains the secure enclave and considering it's PKI-based security you will only ever get chips that are matched to a serial number. Pretty much the same way Intel chips are matched to Intel PCHs using the CPU ROM. You can of course get the PCH and the CPU from Intel, but you'll never get the firmware to load on them unless you're a mainboard manufacturer. Considering the secure enclave is also used for data encryption, anti-theft and machine identification to APIs like iMessage, it's probably not a good idea to have them available on the open market in manufacturing mode anyway (unless someone comes up with a smart way to have PKI while also having free-for-all).