Sony has been a pretty big player and investor in VR and 3D headsets and displays for decades, so they have a lot of patents compared to relative newcomers like Meta. This will surely shrink the innovation pool.
To sell now means they just don't see VR tech as being profitable over any meaningful timeframe, but I know it comes as part of a wider 'exit from hardware' Sony is doing.. maybe VR will prove profitable medium term for others, but I see Meta has burned $19bil last year on VR and isn't expecting profit any year soon, at about a 20:1 burn rate.. So who knows.
Pretty sure big tech has lost the plot and Sony is activating parachute mode while there's still cash on offer.