AWS case study -3) It could be any of those issues. Does sony operate its own cloud infrastructure?
Using the opportunity of a generational jump from PlayStation 4 to PlayStation 5, Sony Interactive Entertainment reimagined its online multiplayer ecosystem to meet game developer and player needs at a global scale. In this GDC session, Sony Interactive Entertainment shares how it reinvented its legacy architecture and uses Amazon Web Services (AWS) to ensure high scalability, availability, and flexibility to meet changing demands for the next generation of play.
Pretty sure that covers voice-chat and spectating which will be large service consumers. AWS have increased their prices several years in a row.