Playstation is nowhere near the only profit maker for Sony https://www.sony.com/en/SonyInfo/IR/library/presen/er/pdf/25q2_sony.pdf (from https://www.sony.com/en/SonyInfo/IR/library/presen/er/archive.html)

Most cameras will let you export raw files, and a lot of phones do as well(although the phone ones aren’t great since they usually do a lot of processing on it before giving you the normal picture)

I think the RAM just uses laptop sticks, so it is upgradable edit: https://www.digitalfoundry.net/features/hands-on-with-steam-machine-valves-new-pcconsole-hybrid