As long as it stays around 30% of the games sold on the platform i would say they have to keep supporting it. The problem is the now mandatory online activation for the disc drive addon (not a problem now but could become a problem in the future). The OG PS5 is now more valuable because you dont need that, its crazy when you think about it, if you wanted you could use it like a classic console without a PSN account and never connecting to the internet. Not sure what happens with Dualsense firmware updates in that sense, i know the console firmware can be updated via discs.