Soundwave on 13 June 2020
The XBox SX SSD is very, very fast, it's not a bottleneck at all.
If anything most 3rd party devs aren't going to bother with the faster speed of the PS5 SSD. The XBox SX NVMe is a huge upgrade over regular HDDs of the past and devs aren't going to lock the XBox + PC + possibly Switch 2 out of the equation for some Sony-only solution.
The XBox SX NVMe will be the standard for devs and even that speed may be overkill for a lot of developers. A lot of devs will be reluctant to have even NVMe standard because there's lots of PC rigs that don't have one yet and do you really want to cut your PC audience down, not to mention PS4 Pro and XB1X are at least going to be on devs' radar for another 1-2 years too.
