My explanation is that Sony is afraid of native PS5 game save exploits (remember Twilight hack?). By uploading save to a server they can verify save data.
For current system they reuse code which comes from Vita to PS4/PS3 data transfer (Transfarring as Kojima sees it :D)
They could have done an API for PS5 games for a safe data import without PS4 copy but I guess it was not a priority because in a year nobody will remember this thing.
As for Microsoft there never was much interest in One hacking. I would like to see a Linux on SX though.
For current system they reuse code which comes from Vita to PS4/PS3 data transfer (Transfarring as Kojima sees it :D)
They could have done an API for PS5 games for a safe data import without PS4 copy but I guess it was not a priority because in a year nobody will remember this thing.
As for Microsoft there never was much interest in One hacking. I would like to see a Linux on SX though.