Why would the company used have any responsbility? Remember, the phone is owned by San Bernadino county. They wanted it cracked. The holder was the San Bernadino Sherrifs', they want it cracked. The FBI wants it cracked. The judge issued a warrant covering the data on it, and then the all writs act compelling companies to assist if they can.

Apple could not.

Cellebrite could.

I get what you're saying, but this is having your cake and eating it too. Apple chose not to assist. The FBI found someone who could. Why would that company then have to disclose to, basically, a third party (even a third party inventor of the phone) their standard work product and trade secrets?