Looks like PSOX will finally be playable online again sometime.
It was recently announced via Insignia's discord and on reddit that they are working with Sylvernet and Schthack to allow users to choose where they want to play. I for one am quite happy to see this happening. PSOX always had a ton of potential having been on xbox. The game only required a gamertag (which new ones will be made via insignia) and doesn't need unique SNAKs. So anyone who wants to play can do so quite easily.