Sony already has something similar to Nvidia's DLSS with the checkerboard renderer implemented in the PS4 console, but the results are not really on par because of the limited hardware. An improved version integrated with the PS5 could benefit from the more powerful AMD hardware, ensuring that 4K games at least run @60 fps properly.
https://www.notebookcheck.net/Sony-patents-tech-similar-to-Nvidia-s-DLSS-could-include-it-in-PS5-consoles-to-achieve-higher-FPS-counts-in-4K-games.483457.0.html