It just doesn't work in reality. I work somewhere that makes IoT devices, our microphone noise-cancellation code is written by a third party with a license not

It just doesn't work in reality. I work somewhere that makes IoT devices, our microphone noise-cancellation code is written by a third party with a license not to redistribute. They sell their code to multiple companies. If we stopped supporting some device for X years, does that mean we're legally allowed to open source their noise cancelation code?