In my little universe, PTP gets used for audio-over-IP systems like AES67, Dante, and AVB, which in turn get used for stage and studio (both very big and also quite small).
These systems are commonly used to trunk audio between points. Using them and a strand or two of glass or a cat6 cable is most of all that is needed to distribute dozens (or hundreds, and potentially thousands) of low-latency uncompressed audio signals.
PTP is part of how latency is kept low, and audio in-phase (which is a task that, itself, requires accuracy on the order of microseconds).
These systems are commonly used to trunk audio between points. Using them and a strand or two of glass or a cat6 cable is most of all that is needed to distribute dozens (or hundreds, and potentially thousands) of low-latency uncompressed audio signals.
PTP is part of how latency is kept low, and audio in-phase (which is a task that, itself, requires accuracy on the order of microseconds).