Honestly I don't think Sony even cares anymore. They consider their ecosystem more like a PC now. PS4, PS5, PS6. Sony understands that things have changed now. All the top played games can be played on past gen systems so there's not much reason to upgrade like there used to be. I had a buddy who played with us all the time and he was still on his PS4. HD2 was the game that finally forced him to upgrade so he can play with us. I suspect this will continue to be the trend for consoles from here on out. I think tons of people wont upgrade until they are forced to because their system breaks or if all the top games decide to end support for past gens which they have no incentive to do.
As long as you're in their ecosystem buying games and signing up for sub services that's all they care about. Now if those Ps4 users start upgrading to PC\Xbox\Switch 2 instead of moving to PS5 that's when they will start to panic. Buying consoles has never been a money maker. It's selling games, subs, dlc and in game purchases that have made them their money.