Sony is a Japanese company but it's also a multinational company consisting of hundreds of companies they aquired over the years all over the globe. It's therefore a relatively small chance is has something to do with Japan specifically.
10 years in cinema IoT, here. Features are encrypted by Key Delivery Messages (KDM), and those are per cinema server/projector "marriage". No KDM will be considered valid if the server certs are expired.
This should make 2024 interesting for me.