Here is how a lawyer without open source spirit might  look at it  :-)  

Open Source code  is free  - thus it is a partner in the any tool built on it or usage there of ! Notwithstanding the terms of self issued licence(s) which states no warranty or support , by virtue of it being free ,  it is a party because ownership didn't transfer through a financial transaction ..

A car is fully paid , and so is a camera - thus the manufacturer is absolved of any further usage by new owner .. ownership is legally transferred.